Teorema de Barbier (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Teorema de Barbier" in Portuguese language version.

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archives-ouvertes.fr

Lay, Steven R. (2007), Convex Sets and Their Applications, ISBN 9780486458038, Dover, Theorem 11.11, pp. 81–82 .

Bayen, Térence; Henrion, Didier (2012), «Semideﬁnite programming for optimizing convex bodies under width constraints», Optimization Methods and Software, 27 (6): 1073–1099, doi:10.1080/10556788.2010.547580 .
Sylvester, J. J. (1890), «On a funicular solution of Buffon's "problem of the needle" in its most general form», Acta Mathematica, 14 (1): 185–205, doi:10.1007/BF02413320 .

Barbier, E. (1860), «Note sur le problème de l'aiguille et le jeu du joint couvert» (PDF), Journal de mathématiques pures et appliquées, 2^e série (em French), 5: 273–286