1. A. M. Samoilenko and N. A. Perestyuk, Differential Equations with Impulse Excitation [in Russian], Vyshcha Shkola, Kiev (1987).
2. B. N. Pshenichnyi and V. V. Ostapenko, Differential Games [in Russian], Naukova Dumka, Kiev (1991).
3. L. S. Pontryagin, Selected Scientfic Works [in Russian], Nauka, Moscow (1988).
4. E. V. Ostapenko,“Operator constructions in games for discontinuous dynamic systems,” in: The Theory of Optimal Solutions, V. M. Glushkov Cybernetics Institute, Kiev (1999), pp. 14–18.