Reference health

Discretional Convexity and the Maximum Principle for Discrete Systems

https://doi.org/10.1137/0304023
CiteStamped reference-health badge
5/5 checkable references clean · checked 2026-08-29

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

4 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 5 checked references that resolve
resolves10.1016/B978-1-4831-6717-6.50009-7
Optimal Control for Systems Described by Difference Equations
resolves10.1109/TAC.1966.1098235
Convexity and the maximum principle for discrete systems
resolves10.1017/CBO9780511566172
Convexity
resolves10.1307/mmj/1028998668
The existence of optimal controls.
resolves10.1016/0022-247X(62)90033-1
Relaxed variational problems
The 4 references without a DOI — listed, not checked
no DOI — not checkedElements of functional analysis
no DOI — not checkedR5
no DOI — not checkedR8
no DOI — not checkedJ. M. Holtzman, H. Halkin, Directional convexity and the existence of optimal controls, Technical Memorandum, Bell Telephone Laboratories, 1965
What this badge says. CiteStamped means the CHECKABLE references of this work were clean at the dated check: each resolved to a known work in a public registry, and none carried a retraction notice at that time. It says nothing about the quality, findings, or importance of the work itself, and nothing about references deposited without a DOI.

checked 2026-08-29 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record

Embed this badge

Both snippets point at the live badge image and link back to this page. The badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.

<a href="https://citestamp.com/citestamped/10.1137/0304023"><img src="https://citestamp.com/citestamped/10.1137/0304023/badge.svg" alt="CiteStamped reference-health badge" width="460" height="64"></a>
[![CiteStamped reference-health badge](https://citestamp.com/citestamped/10.1137/0304023/badge.svg)](https://citestamp.com/citestamped/10.1137/0304023)