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3. Yu. S. Osipov, “On the theory of differential games of systems with aftereffect,” J. Appl. Math. Mech. 35 (2), 262–272 (1971).
4. Yu. S. Osipov, “Position control in parabolic systems,” J. Appl. Math. Mech. 41 (2), 187–193 (1977).
5. A. I. Subbotin and A. G. Chentsov, Guarantee Optimization in Control Problems (Nauka, Moscow, 1981) [in Russian].