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A Simple Proof of a Theorem in the Calculus of Variations (Extract from a Letter to Mr. W. F. Osgood)
E. GoursatVolume:
5
Language:
english
Journal:
Transactions of the American Mathematical Society
DOI:
10.2307/1986205
Date:
April, 1904
File:
PDF, 201 KB
english, 1904