@article{02112561,
title = {Around the proof of the Legendre-Cauchy lemma on convex polygons.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {45},
year = {2004},
pages = {892-919},
zbl = {1051.52015},
language = {en},
url = {http://dml.mathdoc.fr/item/02112561}
}
Sabitov, I.Kh. Around the proof of the Legendre-Cauchy lemma on convex polygons.. Sibirskij Matematicheskij Zhurnal, Tome 45 (2004) pp. 892-919. http://gdmltest.u-ga.fr/item/02112561/