1. Krasovskii, N. N., and Subbotin, A. I., Positional Differential Games, Nauka, Moscow, Russia, 1974 (in Russian).
2. Kurzhanskii, A. B., Control and Obserûation under Conditions of Uncertainty, Nauka, Moscow, Russia, 1977 (in Russian).
3. Chernousko, F. L., and Melikyan, A. A., Game Problems of Control and Search, Nauka, Moscow, Russia, 1978 (in Russian).
4. Krasovskii, N. N., and Osipov, Ju. S., On the Theory of Differential Games with Incomplete Information, Soviet Mathematics Doklady, Vol. 15, No. 2, pp. 587–591, 1974.
5. Subbotina, N. N., and Subbotin, A. I., A Game Problem of Control in the Case of Incomplete Information, Engineering Cybernetics, Vol. 15, No. 5, pp. 1– 10, 1978.