Paper Citation Record · LEDGER

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis

As of 21 August 2026, this Paper Citation Record lists 46 of 46 outbound references and 0 inbound Pith citation observations for arXiv:2606.03120.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2606.03120 v1

Coverage vector

measured 46 of 46 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-06-28T11:22:40.914345Z

measured 46 of 46 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-21T06:32:19.484+00:00

measured 0 of 0 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: cited_works

Reference resolution

46 of 46 outbound references displayed

verified exact4
verified fuzzy0
unresolved41
parse uncertain0
malformed identifier1
metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation b6977721-33c0-486d-93c6-0ed07e272414 · outbound

This paper cites Barron, Ben Mildenhall, Dor Verbin, Pratul P.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Barron, Ben Mildenhall, Dor Verbin, Pratul P

Reference 1

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 0ba3bf8f-4b67-46e6-8ff9-a10819be0d23 · outbound

This paper cites Barron, Ben Mildenhall, Dor Verbin, Pratul P.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Barron, Ben Mildenhall, Dor Verbin, Pratul P

Reference 2

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 87d94d7d-218c-4e5b-9cf4-7c8b449c8a5f · outbound

This paper cites Wriva public data, 2024.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Wriva public data, 2024

Reference 3

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation d16a8f76-cf02-444a-bfb4-54a69246f889 · outbound

This paper cites Grace Chang, Bin Yu, and Martin Vetterli.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Grace Chang, Bin Yu, and Martin Vetterli

Reference 4

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 61f42318-5519-4500-a535-daf98a7e21f3 · outbound

This paper cites Depth-regularized optimization for 3D gaussian splatting in few-shot images.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Depth-regularized optimization for 3D gaussian splatting in few-shot images

Reference 5

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f3ced507-a8cb-4749-bdad-a9f2cd43e412 · outbound

This paper cites PhD thesis, Apollo - University of Cambridge Repository, 2019.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis PhD thesis, Apollo - University of Cambridge Repository, 2019

Reference 6

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 5fc594f2-b1cc-4ef6-b197-7062abf56030 · outbound

This paper cites SIAM, Philadelphia, PA, 1992.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis SIAM, Philadelphia, PA, 1992

Reference 7

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e92226e1-6609-4e83-bc3f-a4f8f8790c58 · outbound

This paper cites an unresolved cited work.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Unresolved cited work

Reference 8

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation d10a34e4-8df2-4da0-83ef-408d160d35b1 · outbound

This paper cites Plenoxels: Radiance fields without neural networks.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Plenoxels: Radiance fields without neural networks

Reference 9

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f74368be-1a40-4815-ab3b-1995c191ffb0 · outbound

This paper cites DreamSim: Learning new dimensions of human visual similarity using synthetic data.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis DreamSim: Learning new dimensions of human visual similarity using synthetic data

Reference 10

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 887e82cf-daad-4d46-9b71-24aee859045c · outbound

This paper cites Faster-gs: Analyzing and improving gaussian splatting optimization, 2026.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Faster-gs: Analyzing and improving gaussian splatting optimization, 2026

Reference 11

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation de1f8db9-968b-49cf-ab6a-2b12493b5c3b · outbound

This paper cites Deep blending for free-viewpoint image-based rendering.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Deep blending for free-viewpoint image-based rendering

Reference 12

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 56206ce4-c85c-4062-b9be-3c00a938d9de · outbound

This paper cites 2D gaussian splatting for geometrically accurate radiance fields.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis 2D gaussian splatting for geometrically accurate radiance fields

Reference 13

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 20b8e555-2b44-4ff6-b074-714aec5e4ff7 · outbound

This paper cites Putting NeRF on a diet: Semantically consis- tent few-shot view synthesis.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Putting NeRF on a diet: Semantically consis- tent few-shot view synthesis

Reference 14

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 98bae451-6a40-427d-a4a1-372784a85ccb · outbound

This paper cites 3D gaussian splatting for real-time radiance field rendering.ACM Transactions on Graphics, 42(4):139:1– 139:14, 2023.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis 3D gaussian splatting for real-time radiance field rendering.ACM Transactions on Graphics, 42(4):139:1– 139:14, 2023

Reference 15

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 32d5408a-2186-4c0d-a967-9d0c64efb5e1 · outbound

This paper cites Tanks and temples: Bench- marking large-scale scene reconstruction.ACM Transactions on Graphics, 36(4), 2017.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Tanks and temples: Bench- marking large-scale scene reconstruction.ACM Transactions on Graphics, 36(4), 2017

Reference 16

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 740ce241-63bb-4927-89f9-4a8173275b3e · outbound

This paper cites Grounding image matching in 3d with mast3r, 2024.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Grounding image matching in 3d with mast3r, 2024

Reference 17

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 775c8284-c4ee-4c72-b960-dbc847d2c263 · outbound

This paper cites DNGaussian: Optimizing sparse-view 3D gaussian radiance fields with global-local depth normalization.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis DNGaussian: Optimizing sparse-view 3D gaussian radiance fields with global-local depth normalization

Reference 18

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation bb95482b-aad7-42e3-98cd-e12cff3d1433 · outbound

This paper cites Dngaussian++: Improving sparse-view gaussian radiance fields with depth normalization.IEEE Transactions on Pattern Analysis and Machine Intelligence, pages 1–18, 2026.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Dngaussian++: Improving sparse-view gaussian radiance fields with depth normalization.IEEE Transactions on Pattern Analysis and Machine Intelligence, pages 1–18, 2026

Reference 19

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 73725622-5f18-4ee4-9356-9f2a300adc1e · outbound

This paper cites an unresolved cited work.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Unresolved cited work

Reference 20

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ded171a0-c2ac-4702-acfc-e8e3b0bb42a8 · outbound

This paper cites Srinivasan, Matthew Tancik, Jonathan T.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Srinivasan, Matthew Tancik, Jonathan T

Reference 21

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation bf584442-e484-4a42-a9e9-dbfe5d6a8843 · outbound

This paper cites Instant neural graphics primitives with a multiresolution hash encoding.ACM Transactions on Graphics, 41(4):102:1– 102:15, 2022.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Instant neural graphics primitives with a multiresolution hash encoding.ACM Transactions on Graphics, 41(4):102:1– 102:15, 2022

Reference 22

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 8a65a5ac-dc1d-4cc5-8261-d2a9f856f2ab · outbound

This paper cites Barron, Ben Mildenhall, Mehdi S.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Barron, Ben Mildenhall, Mehdi S

Reference 23

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation c45b0a63-19bb-4c3a-bd9e-a756eda47bd0 · outbound

This paper cites Olshausen and David J.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Olshausen and David J

Reference 24

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e1fa3106-77bd-49ff-8ae1-dc3bde2f947d · outbound

This paper cites CoherentGS: Sparse novel view synthesis with coherent 3D gaussians.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis CoherentGS: Sparse novel view synthesis with coherent 3D gaussians

Reference 25

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 4b86ff77-04de-40af-a7a9-95d227192ad8 · outbound

This paper cites Simoncelli.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Simoncelli

Reference 26

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 11d0fc28-4832-4edc-88a4-016b198e346c · outbound

This paper cites Octree-GS: Towards Consistent Real-time Rendering with LOD-Structured 3D Gaussians.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Octree-GS: Towards Consistent Real-time Rendering with LOD-Structured 3D Gaussians

Reference 27

Resolution: verified exact; arxiv_id, observed 2026-07-02T01:56:28.336758Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.

Observation 4a722e66-4314-47c3-8b85-68934f1e8736 · outbound

This paper cites Diffnat : Exploiting the kurtosis concentration property for image quality improvement.Transactions on Machine Learning Research, 2025.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Diffnat : Exploiting the kurtosis concentration property for image quality improvement.Transactions on Machine Learning Research, 2025

Reference 28

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 7757baa7-8077-4679-9233-bf407bcd5b83 · outbound

This paper cites Ruderman.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Ruderman

Reference 29

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f00babc3-1614-4539-a3b7-707c88595e36 · outbound

This paper cites Simoncelli and Edward H.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Simoncelli and Edward H

Reference 30

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 6bbbc4c0-11ad-4ccd-9825-f1e228f9c8ad · outbound

This paper cites Simoncelli and Bruno A.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Simoncelli and Bruno A

Reference 31

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 27498a0a-59c1-41b3-a0a7-e6bff2953454 · outbound

This paper cites Nerfstudio: A modular framework for neural radiance field development.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Nerfstudio: A modular framework for neural radiance field development

Reference 32

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 0cb42e68-9328-444d-9565-c9562a139d6c · outbound

This paper cites SPARS3R: Semantic Prior Alignment and Regularization for Sparse 3D Reconstruction.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis SPARS3R: Semantic Prior Alignment and Regularization for Sparse 3D Reconstruction

Reference 33

Resolution: verified exact; arxiv_id, observed 2026-07-02T01:56:28.340831Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.

Observation 6ff63080-5369-48aa-9148-13217d49781d · outbound

This paper cites Walnut.The Discrete Wavelet Transform, pages 215–248.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Walnut.The Discrete Wavelet Transform, pages 215–248

Reference 34

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 43918dcc-6559-4673-93fe-fdfff0aca121 · outbound

This paper cites SparseNeRF: Distilling depth ranking for few-shot novel view synthesis.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis SparseNeRF: Distilling depth ranking for few-shot novel view synthesis

Reference 35

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 2b5dd19f-8545-4bad-aaa0-cbf62355e307 · outbound

This paper cites Bovik, Hamid R.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Bovik, Hamid R

Reference 36

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e0939401-06ef-436c-9ca2-570a0cd4131c · outbound

This paper cites Srinivasan, Dor Verbin, Jonathan T.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Srinivasan, Dor Verbin, Jonathan T

Reference 37

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 45848663-0e31-4f8e-885d-3fad267ba201 · outbound

This paper cites SparseGS: Real-time 360° sparse view synthesis using gaussian splatting, 2023.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis SparseGS: Real-time 360° sparse view synthesis using gaussian splatting, 2023

Reference 38

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 3b9b73da-cf39-485e-9acb-0582b3a2008d · outbound

This paper cites Splatfacto-W: A Nerfstudio Implementation of Gaussian Splatting for Unconstrained Photo Collections.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Splatfacto-W: A Nerfstudio Implementation of Gaussian Splatting for Unconstrained Photo Collections

Reference 39

Resolution: verified exact; arxiv_id, observed 2026-07-02T01:56:28.328836Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.

Observation 680c6f51-b938-4ce6-8b6d-530aa5e64030 · outbound

This paper cites FreeNeRF: Improving few-shot neural rendering with free frequency regularization.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis FreeNeRF: Improving few-shot neural rendering with free frequency regularization

Reference 40

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 03f46044-ec6a-4381-9371-e7271b64e08d · outbound

This paper cites Mvimgnet: A large-scale dataset of multi-view images.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Mvimgnet: A large-scale dataset of multi-view images

Reference 41

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 4c5d6d0a-ee86-4d63-b4c9-ae882250e32e · outbound

This paper cites Mip-splatting: Alias-free 3D gaussian splatting.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Mip-splatting: Alias-free 3D gaussian splatting

Reference 42

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 0b12af49-3768-4afe-867c-158c844fbd18 · outbound

This paper cites CoR-GS: Sparse-View 3D Gaussian Splatting via Co-Regularization.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis CoR-GS: Sparse-View 3D Gaussian Splatting via Co-Regularization

Reference 43

Resolution: verified exact; arxiv_id, observed 2026-07-02T01:56:28.332519Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.

Observation 2d8c8aff-fc48-4a6e-9888-82d6d3923fe7 · outbound

This paper cites Efros, Eli Shechtman, and Oliver Wang.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Efros, Eli Shechtman, and Oliver Wang

Reference 44

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ed842e2b-6737-4e8d-b6ce-2111d9a93c15 · outbound

This paper cites Fsgs: Real-time few-shot view synthesis using gaussian splatting, 2023.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis Fsgs: Real-time few-shot view synthesis using gaussian splatting, 2023

Reference 45

Resolution: unresolved; no resolver link, observed 2026-06-28T11:22:40.914345Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f7c6926c-0999-43b9-bf3b-d05c9c53926f · outbound

This paper cites FSGS: Real-time few-shot view synthesis using gaussian splatting.

KC-3DGS: Kurtosis-Constrained Gaussian Splatting for High-Fidelity View Synthesis FSGS: Real-time few-shot view synthesis using gaussian splatting

Reference 46

Resolution: malformed identifier; arxiv_id, observed 2026-07-02T01:56:28.324790Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.

Pith citing papers

No inbound Pith citation observations are available.