@article{1255987064,
author = {Fenton, P. C.},
title = {The growth of $\Phi \Phi''/\Phi'^{2}$ for convex functions},
journal = {Illinois J. Math.},
volume = {37},
number = {4},
year = {1993},
pages = { 502-507},
language = {en},
url = {http://dml.mathdoc.fr/item/1255987064}
}
Fenton, P. C. The growth of $\Phi \Phi''/\Phi'^{2}$ for convex functions. Illinois J. Math., Tome 37 (1993) no. 4, pp. 502-507. http://gdmltest.u-ga.fr/item/1255987064/