Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-16T05:11:48.694792Z
Paper Citation Record · LEDGER
As of 23 August 2026, this Paper Citation Record lists 26 of 26 outbound references and 2 inbound Pith citation observations for arXiv:2504.21448.
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, observed 2026-08-16T05:11:48.694792Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-23T06:30:58.430688+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-05-19T03:45:42.220147Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-05-19T03:47:01.702163Z
26 of 26 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation e5d2c441-2e7b-40c3-9cf2-8b1c4dec6a15 · outbound
On phase in scaled graphs Skogestad and I
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation d141a17a-7b92-4254-a5e0-a79779271a43 · outbound
On phase in scaled graphs Unresolved cited work
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 99482aa0-a6b6-4ffc-92f2-0a0ccc052373 · outbound
On phase in scaled graphs Scaled relative graphs: Non- expansive operators via 2D Euclidean geometry,
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 0dff2cad-8646-4062-ae1b-c252a594e8eb · outbound
On phase in scaled graphs Scaled relative g raphs for system analysis,
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation f07e2903-49f0-4cf6-ae97-af549639fe3e · outbound
On phase in scaled graphs A rolled-off passivity theorem,
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 23eb788a-9e43-4f5f-aa9b-8bb05ac63732 · outbound
On phase in scaled graphs Graphical Nonli near System Analysis,
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 746f074a-e239-4548-8f8c-393d02232282 · outbound
On phase in scaled graphs Scaled graphs for reset control system analysis,
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation bcd9f2c2-ea84-4077-9fb9-8261a18108e6 · outbound
On phase in scaled graphs The Scaled Relative Graph of a Linear Operator
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 50baa2ba-c6d5-4125-916c-5120272945e1 · outbound
On phase in scaled graphs van der Schaft, L2-Gain and Passivity Techniques in Non-linear Control, Springer, 2017
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 3b9b00dc-51f7-4553-816f-02c33a56a73d · outbound
On phase in scaled graphs Wielandt, Topics in the Analytic Theory of Matrices
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation c5187440-544e-4d69-b4c4-3511985707b6 · outbound
On phase in scaled graphs Soft and hard scal ed relative graphs for nonlinear feedback stability
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 2c7f6b75-82f8-42ca-918f-139cbeee4dea · outbound
On phase in scaled graphs On the input-output stability of time-varyi ng non-linear feedback systems Part one: Conditions derived using concep ts of loop gain, conicity, and positivity,
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 90902ceb-a404-42f5-9f17-a4970428ecfe · outbound
On phase in scaled graphs Unresolved cited work
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 314be589-d36d-4963-b833-672dafd91139 · outbound
On phase in scaled graphs Astrom and T
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation b7d46c69-1088-4683-aaec-17abc7418467 · outbound
On phase in scaled graphs Unresolved cited work
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 730f64ba-77e4-460d-9e62-1dfc5526473e · outbound
Reference 17
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b5b71c9a-735f-4df5-90d7-bf791724d72f · outbound
On phase in scaled graphs Khalil, Non-linear Systems (3rd ed.)
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 57efbadc-f5ad-4671-8748-ada0c525a0f0 · outbound
On phase in scaled graphs Extendi ng negative imaginary systems theory to nonlinear systems,
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 64b6060a-5622-4dd6-92b1-1bc6923a5ea1 · outbound
On phase in scaled graphs Stability analysis of intercon nected systems with “mixed
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 6e59de57-b1fe-4d41-85ef-76fffc0150ac · outbound
On phase in scaled graphs Characterization of input- output neg- ative imaginary systems in a dissipative framework,
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 6c38ab74-d3f3-4dc0-92af-b7a695a85e17 · outbound
On phase in scaled graphs A frequency-domain ap proach to nonlinear negative imaginary systems analysis,
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 3b97d68a-6288-4f18-a940-21cd74a8ab1f · outbound
On phase in scaled graphs Stability robustness of a feedback inter- connection of systems with negative imaginary frequency re sponse,
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation db284b57-9ad0-4d46-b120-14592946375b · outbound
On phase in scaled graphs System analysis via integ ral quadratic constraints,
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation f8c1163a-756c-4af1-87f4-dc470ba90c6b · outbound
On phase in scaled graphs On a larg e-gain theorem,
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation f62429bc-0259-46eb-8b6e-eee2e41ab9f3 · outbound
On phase in scaled graphs On the input- output stability of nonlinear systems: Large gain theorem
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 4135a80d-38e7-49bc-a829-c4170249c327 · outbound
On phase in scaled graphs Freeman, ‘On the Role of Well-Posedness in Homotop y Methods for the Stability Analysis of non-linear Feedback Systems’ , In Lecture Notes in Control and Information Sciences, pp
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation e88db15f-7b54-4737-b730-220a6fd695c2 · inbound
Analysis of Non-Square Nonlinear MIMO Systems using Scaled Relative Graphs On phase in scaled graphs
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.
Observation 77b57148-4f1c-44b9-9477-84b4a1941e55 · inbound
Symmetry Is Almost All You Need: Robust Stability with Uncertainty Induced by Symmetric SRG Regions On phase in scaled graphs
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-23T06:30:58.430688+00:00.