@article{1102784669, author = {Mahfoud, W. E.}, title = {Comparison theorems for delay differential equations.}, journal = {Pacific J. Math.}, volume = {85}, number = {2}, year = {1979}, pages = { 187-197}, language = {en}, url = {http://dml.mathdoc.fr/item/1102784669} }
Mahfoud, W. E. Comparison theorems for delay differential equations.. Pacific J. Math., Tome 85 (1979) no. 2, pp. 187-197. http://gdmltest.u-ga.fr/item/1102784669/