@article{1103039111,
author = {Hartman, Philip},
title = {On functions representable as a difference of convex functions.},
journal = {Pacific J. Math.},
volume = {9},
number = {4},
year = {1959},
pages = { 707-713},
language = {en},
url = {http://dml.mathdoc.fr/item/1103039111}
}
Hartman, Philip. On functions representable as a difference of convex functions.. Pacific J. Math., Tome 9 (1959) no. 4, pp. 707-713. http://gdmltest.u-ga.fr/item/1103039111/