Reference health
Proof of the law of diminishing returns
4/4 checkable references clean · checked 2026-09-03
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.
11 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 4 checked references that resolve
The 11 references without a DOI — listed, not checked
no DOI — not checkedK. J. Arrow, E. Barankin, and D. Blackwell: Admissable Points of Convex Sets, Contributions to the Theory of Games, Vol. II, Princeton University Press (1953).
no DOI — not checkedC. Berge: Topological Spaces, New York, p. 163, (1963).
no DOI — not checkedC. W. Cobb, and P. H. Douglas: A Theory of Production, The American Economic Review, Papers and Proceedings18 (1926), pp. 139–165.
no DOI — not checkedK. Menger: The Logic of the Laws of Return, A Study in MetaEconomics, Economic Activity Analysis, Part III, edited by Oskar Morgenstern, John Wiley and Sons, New York, (1954). Originally published as two papers: Bemerkungen zu den Ertragsgesetzen, Zeitschrift für NationalökonomieVII (1936), pp. 25–26, and: Weitere Bemerkungen zu den Ertragsgesetzen, ibid, pp. 388–397.
no DOI — not checkedJ. S. Mill: Principles of Political Economy, Vol. I, (1848). Revised Edition, Book I, Chapter XII, New York, (1900).
no DOI — not checkedW. Rudin: Principles of Mathematical Analysis, Chapters 3, New York, (1964).
no DOI — not checkedP. A. Samuelson: Economics, Part I, Chapter 2, B, Sixth Edition, McGraw-Hill, New York, (1964).
no DOI — not checkedJ. A. Schumpeter: History of Economic Analysis, Part II, Chapters, 2 (b), Oxford University Press, New York, (1966).
no DOI — not checkedR. W. Shephard: The Notion of a Production Function, Unternehmensforschung, Vol. 2, No. 4, pp. 209–232, (1967).
no DOI — not checkedR. W. Shephard: Theory of Cost and Production Functions, submitted to Princeton University Press, (June 1969).
no DOI — not checkedJ. R. A. Turgot: Observations sur le Memoire de M. Saint-Péravy, (1767), in Oeuvres de Turgot, Ed. Daire, Vol. 1, pp. 418–433, Paris, (1844).
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