1. L. S. Pontryagin and E. F. Mishchenko, ?The problem of escape of one controlled object from another,? Dokl. Akad. Nauk SSSR,189, No. 1 (1969).
2. L. S. Pontryagin and E. F. Mishchenko, ?The problem of evading contact in linear differential games,? Diff. Uravn., No. 3 (1971).
3. B. N. Pshenichnyi, ?On the problem of escape,? Kibernetika, No. 4 (1975).
4. L. S. Pontryagin, ?Linear differential games of escape,? Tr. Steklov Mat. Inst.,112, (1971).
5. M. S. Nikol'skii, ?On the linear problem of escape,? Dokl. Akad. Nauk SSSR,218, No. 5 (1974).