Oscillation of the solutions of a class of impulsive differential equations with a deviating argument. Bainov, D.D.; Dimitrova, Margarita B.; Dishliev, Angel B. — 1998 Journal of Applied Mathematics and Stochastic Analysis
Sufficient conditions for the oscillation of the solutions to a class of impulsive differential equations with advanced argument. Bainov, Drumi D.; Dimitrova, Margarita B.; Simenov, Pavel S. — 1996 Publications de l'Institut Mathématique. Nouvelle Série