@article{1183513889,
author = {Peixoto, Mauricio Matos},
title = {Generalized convex functions and second order differential inequalities},
journal = {Bull. Amer. Math. Soc.},
volume = {55},
number = {12},
year = {1949},
pages = { 563-572},
language = {en},
url = {http://dml.mathdoc.fr/item/1183513889}
}
Peixoto, Mauricio Matos. Generalized convex functions and second order differential inequalities. Bull. Amer. Math. Soc., Tome 55 (1949) no. 12, pp. 563-572. http://gdmltest.u-ga.fr/item/1183513889/