Variational and boundary value problems for differential equations with deviating argument Kamenskii, G. A.; Myshkis, A. D. — 1979 Equadiff IV
Asymptotic equivalence of impulsive differential equations in a Banach space. D. D. Bainov; S. I. Kostadinov; A. D. Myshkis — 1990 Publicacions Matemàtiques By means of Schauder's fixed point theorem sufficient conditions for asymptotic equivalence of impulsive equations in a Banach space are found.
Oscillatory and asymptotic properties of the solutions of a class of operator-differential equations. D. D. Bainov; M. D. Dimitrova; A. D. Myshkis — 1994 Revista Matemática de la Universidad Complutense de Madrid