@article{01310559, title = {Sufficient conditions for the oscillation to bounded solutions of a class of impulsive differential equations of second order with a constant delay.}, journal = {Georgian Mathematical Journal}, volume = {6}, year = {1999}, pages = {99-106}, doi = {10.1023/A:1022167031337}, zbl = {0926.34056}, language = {en}, url = {http://dml.mathdoc.fr/item/01310559} }
Bainov, D.D.; Dimitrova, M.B. Sufficient conditions for the oscillation to bounded solutions of a class of impulsive differential equations of second order with a constant delay.. Georgian Mathematical Journal, Tome 6 (1999) pp. 99-106. doi : 10.1023/A:1022167031337. http://gdmltest.u-ga.fr/item/01310559/