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@article{SMJ2_2004_30_1_a5, author = {Elabbasy, E. and Hassan, T.}, title = {Oscillation {Criteria} for {First} {Order} {Delay} {Differential} {Equations}}, journal = {Serdica Mathematical Journal}, pages = {71--86}, publisher = {mathdoc}, volume = {30}, number = {1}, year = {2004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SMJ2_2004_30_1_a5/} }
Elabbasy, E.; Hassan, T. Oscillation Criteria for First Order Delay Differential Equations. Serdica Mathematical Journal, Tome 30 (2004) no. 1, pp. 71-86. http://geodesic.mathdoc.fr/item/SMJ2_2004_30_1_a5/