@article{1077467332,
author = {Protter, M. H.},
title = {A generalization of completely convex functions},
journal = {Duke Math. J.},
volume = {24},
number = {1},
year = {1957},
pages = { 205-213},
language = {en},
url = {http://dml.mathdoc.fr/item/1077467332}
}
Protter, M. H. A generalization of completely convex functions. Duke Math. J., Tome 24 (1957) no. 1, pp. 205-213. http://gdmltest.u-ga.fr/item/1077467332/