@article{1183503567,
author = {John, Fritz},
title = {Discontinuous convex solutions of difference equations},
journal = {Bull. Amer. Math. Soc.},
volume = {47},
number = {11},
year = {1941},
pages = { 275-281},
language = {en},
url = {http://dml.mathdoc.fr/item/1183503567}
}
John, Fritz. Discontinuous convex solutions of difference equations. Bull. Amer. Math. Soc., Tome 47 (1941) no. 11, pp. 275-281. http://gdmltest.u-ga.fr/item/1183503567/