Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
As of 8 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 68 inbound Pith citation observations for arXiv:2407.03168.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-08T06:32:00.761636+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-07T21:11:25.286501Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-07-04T06:19:38.680614Z
0 of 0 outbound references displayed
External citation measurements
No source-named external measurement is stored.
No outbound reference observations are available for this paper version.
Observation cfae7aa5-7904-4cff-bc95-e877c8cf2f0e · inbound
JoyVASA: Portrait and Animal Image Animation with Diffusion-Based Audio-Driven Facial Dynamics and Head Motion Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 08bf05cc-281b-42ca-aac5-b392396fcb09 · inbound
Long-Term TalkingFace Generation via Motion-Prior Conditional Diffusion Model LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 2021
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 65528477-5eb4-4008-a668-5a17fd178808 · inbound
Speaking images. A novel framework for the automated self-description of artworks LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 23
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e5eaeb69-6529-43ee-972c-34fcf1bf1952 · inbound
LLIA -- Enabling Low-Latency Interactive Avatars: Real-Time Audio-Driven Portrait Video Generation with Diffusion Models LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c096ecf2-b562-45dc-a656-351d57ea1b92 · inbound
SyncTalk++: High-Fidelity and Efficient Synchronized Talking Heads Synthesis Using Gaussian Splatting LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 14
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 143f50fb-185e-4309-8a31-51dc44e42202 · inbound
Controllable and Expressive One-Shot Video Head Swapping LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 12
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 6aaf8965-6a13-4c4f-8949-6642e08a1285 · inbound
MirrorMe: Towards Realtime and High Fidelity Audio-Driven Halfbody Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 010a4b4a-aaac-41d0-a4ad-9fa9564fd0c0 · inbound
JAM-Flow: Joint Audio-Motion Synthesis with Flow Matching LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 35d7b5c0-065b-4d68-940d-060663e0a6e1 · inbound
ARIG: Autoregressive Interactive Head Generation for Real-time Conversations LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 53726732-687d-45fc-80d2-701344beac12 · inbound
FixTalk: Taming Identity Leakage for High-Quality Talking Head Generation in Extreme Cases LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 18
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4ad9cd3a-349b-4edb-ad0a-53701e6054c8 · inbound
MoDA: Multi-modal Diffusion Architecture for Talking Head Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 11
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 63dbaaf5-b091-4f5f-912c-d04fd5006345 · inbound
KptLLM++: Towards Generic Keypoint Comprehension with Large Language Model LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 15
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 06e2e9f3-37af-418f-9c99-94a143a98a19 · inbound
HairShifter: Consistent and High-Fidelity Video Hair Transfer via Anchor-Guided Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 12
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation db685957-b8f3-450a-b3db-eb1c21d0be13 · inbound
FantasyPortrait: Enhancing Multi-Character Portrait Animation with Expression-Augmented Diffusion Transformers LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f9f70bdc-493b-4841-bde0-aad9efee4fdc · inbound
StableAnimator++: Overcoming Pose Misalignment and Face Distortion for Human Image Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 71
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9583b8e3-a245-4247-8a2e-fce51dafca21 · inbound
Navigating Large-Pose Challenge for High-Fidelity Face Reenactment with Video Diffusion Model LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 35e991ed-1de4-401c-8aa5-fd9e4625e0c7 · inbound
CartoonAlive: Towards Expressive Live2D Modeling from Single Portraits LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 7
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3f30bb8e-0cad-4e2e-b674-4b9e89c98fa0 · inbound
Celeb-DF++: A Large-scale Challenging Video DeepFake Benchmark for Generalizable Forensics LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 48
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 251ab7e5-fb5f-49ba-953b-5289bae9679a · inbound
MagicAnime: A Hierarchically Annotated, Multimodal and Multitasking Dataset with Benchmarks for Cartoon Animation Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5ceb2151-0041-4694-aa51-e82987f7f473 · inbound
JOLT3D: Joint Learning of Talking Heads and 3DMM Parameters with Application to Lip-Sync LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 20
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 090cbec0-35ff-40ae-adf9-c21d330f45b4 · inbound
X-NeMo: Expressive Neural Motion Reenactment via Disentangled Latent Attention LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 2014
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 88363226-141e-419d-a37a-360691740c38 · inbound
EvoMakeup: High-Fidelity and Controllable Makeup Editing with MakeupQuad LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 7
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 47513fd5-ef33-4fa7-afc6-ade0c8f397fb · inbound
LaVieID: Local Autoregressive Diffusion Transformers for Identity-Preserving Video Creation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 14
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2b083382-7765-43cc-8ed8-2139cf5d5285 · inbound
LIA-X: Interpretable Latent Portrait Animator LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 11
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a9af077a-d3d5-49b1-a806-7562705b6b00 · inbound
FantasyTalking2: Timestep-Layer Adaptive Preference Optimization for Audio-Driven Portrait Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 58175350-9275-4437-beee-9c33f9f6a819 · inbound
MIDAS: Multimodal Interactive Digital-humAn Synthesis via Real-time Autoregressive Video Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 32360012-a949-4738-80f6-3f8eadb82ceb · inbound
Human Motion Video Generation: A Survey LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 26
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c4761aa6-b380-4a11-b8eb-04eced6339a9 · inbound
Durian: Dual Reference Image-Guided Portrait Animation with Attribute Transfer LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation bcf74821-70c3-4c65-b0f7-67f2497ff54f · inbound
Bitrate-Controlled Diffusion for Disentangling Motion and Content in Video LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 24
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 736f4d9a-2a7f-461c-ba8a-84ebed8c2fef · inbound
FluentAvatar: Flicker-Free Talking-Head Animation via Phoneme-Guided Autoregressive Modeling LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation c22d6224-53cb-4262-8d68-4211c4113cec · inbound
Unmasking Puppeteers: Leveraging Biometric Leakage to Expose Impersonation in AI-Based Videoconferencing LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 72
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation fe463ee4-32d2-4954-a820-83078ba7c67e · inbound
Omni-Attribute: Open-vocabulary Attribute Encoder for Visual Concept Personalization LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation a7539049-c2ca-46c5-9316-f2c287d7202a · inbound
ViBES: A Conversational Agent with Behaviorally-Intelligent 3D Virtual Body LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation f35e7fcc-bbc2-4c65-bea3-53e013281aa5 · inbound
Instant Expressive Gaussian Head Avatars at Over 100 FPS LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 26
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5f7bcad2-5a8b-4f6a-bd89-169bd75db2a7 · inbound
Avatar Forcing: Real-Time Interactive Head Avatar Generation for Natural Conversation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 18
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5a4fd500-1867-4c60-b78a-ba34e94c2545 · inbound
UIKA: Fast Universal Head Avatar from Pose-Free Images LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation fcdd5373-4a0c-4b8a-b875-6762391b489d · inbound
AHOY! Animatable Humans under Occlusion from YouTube Videos with Gaussian Splatting and Video Diffusion Priors LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 34
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9f3ffca2-95e3-404e-bb48-792a1b4b2a0b · inbound
OpenWorldLib: A Unified Codebase and Definition of Advanced World Models LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 38
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 12ae84e1-3f97-4bb1-a22f-209bbe5f9911 · inbound
OpenWorldLib: A Unified Codebase and Definition of Advanced World Models LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 38
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 966f984a-12f2-43ea-816e-a4186b5105ef · inbound
AvatarPointillist: AutoRegressive 4D Gaussian Avatarization LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation d4010041-cdfe-4cda-b3e0-360333f2bfce · inbound
ARGen: Affect-Reinforced Generative Augmentation towards Vision-based Dynamic Emotion Perception LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation ad0e6f46-f808-4e19-b046-eee9cad1d086 · inbound
ARGen: Affect-Reinforced Generative Augmentation towards Vision-based Dynamic Emotion Perception LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 12
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 01015b66-970d-41bb-94bc-a70bda48dcff · inbound
PortraitDirector: A Hierarchical Disentanglement Framework for Controllable and Real-time Facial Reenactment LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 7f6b9b7f-d53f-4af4-99c1-b840826006a0 · inbound
MeshLAM: Feed-Forward One-Shot Animatable Textured Mesh Avatar Reconstruction LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation b2b3530d-f314-4463-af68-ff6fc6810242 · inbound
Talker-T2AV: Joint Talking Audio-Video Generation with Autoregressive Diffusion Modeling LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation f5bd55fd-35b8-4af0-8035-ceafa08ba1e2 · inbound
SocialDirector: Training-Free Social Interaction Control for Multi-Person Video Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 392e93a4-2db1-4f35-8312-dc817771179f · inbound
The Alpha Blending Hypothesis: Compositing Shortcut in Deepfake Detection LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation c970768c-ac8f-4ac6-9d89-cf3f2b80ae1f · inbound
TOPOS: High-Fidelity and Efficient Industry-Grade 3D Head Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 137
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 5f6ee272-089b-4e1f-acd5-88262f3d2d03 · inbound
EasyVFX: Frequency-Driven Decoupling for Resource-Efficient VFX Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 3cab2997-f37a-4ee4-b515-296a881fa6c6 · inbound
Loki: Representation over Architecture for Diffusion-Based Portrait Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 91a48d76-30a0-45ea-a527-163cb2273a15 · inbound
Test-Time Self-Adaptive Conditioning for Stable Audio-Driven Talking-Head Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 0387484c-1b23-4c95-b7d6-50bece4b2d84 · inbound
CogPortrait: Fine-Grained Eye-Region Control in Portrait Animation via Hierarchical Agent Planning LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation d1e4e76f-87c6-4c59-aa9d-0a958bc4726c · inbound
SteerFace: Debiasing Synthetic Face Generation via Adaptive Residue Perturbation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 0ecb26e4-311f-47da-972a-32c15caf5432 · inbound
Temporally-Aligned Evaluation for Audio-Driven Talking Head Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 54
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 0b3e1e87-c56e-44ce-a5b9-47ae08da7fc7 · inbound
Real-Time Generation of Streamable Talking Portrait Video with Reference-Guided Deep Compression VAEs LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 4b23342d-e65d-429d-b0eb-4c936349512c · inbound
Mamba-Enhanced Implicit Motion Learning for Audio-Driven Portrait Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 192038d0-78ed-466e-abd3-ef14da635584 · inbound
Chehre: An Emoji-Prompted Video Dataset for Perceptually Diverse Facial Expression Recognition LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation 2cba752c-7ba3-4b98-b652-d3c878a29b57 · inbound
Towards Flexible, Natural, Efficient Interaction for Conversational Talking Face Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-08T06:32:00.761636+00:00.
Observation b0631c58-9ab5-4f78-bec3-4c9a1ead5275 · inbound
Towards Flexible, Natural, Efficient Interaction for Conversational Talking Face Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7273ca17-3a0c-44ec-9dae-80f52dc34f6a · inbound
FA-LAM: Focus-Aware Large Avatar Model for One-Shot 4D Animatable Gaussian Head LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 29
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation ddb5892a-390b-40b3-ad5d-14ac65cb36ee · inbound
Real-Time Human-Centric World Modeling for Upper-Body Human-Object Interaction LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 42d9534d-3591-4a52-ab81-3f20e1d11127 · inbound
ViDS: Video Diffusion Shader using 3D Face Tracking LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 26
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation fcc72d5f-8e9e-4700-8344-c6ab3b19a06b · inbound
TaoMate: Anchor-Guided Memory Bridging Evolving and Reference States for Real-Time Audio-Video Digital Human Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 49
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 013221f3-1002-4827-beb8-b6c42d0efb2d · inbound
Split and Drive: Dual-Axis Disentanglement for Real-Time Gaussian Head Avatars LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 13
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4fc0f0bf-5b5b-44e8-b51d-d805438bb4c8 · inbound
TongueReenact: Geometry-Anchored Tongue Synthesis for Face Reenactment LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f71f2e2d-a16e-4625-9f57-715498a9f8e9 · inbound
LeapTalk: Breaking the Latency-Quality Trade-off in Talking Head Generation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 103
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7b018b45-65bd-4589-83ae-92c55145a45f · inbound
InteracVid: Building a Real Interactive Audio-Visual Response Dataset from Live-Chat Videos LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 22
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 73b9810d-d481-4fef-82e1-e5e1416ed362 · inbound
Proxy Avatar Meets Low-Rank Caching: Real-Time One-Shot Emotion-Controllable Portrait Animation LivePortrait: Efficient Portrait Animation with Stitching and Retargeting Control
Reference 81
Source-reported events for the cited work
Unavailable: canonical work link unavailable.