1. G. L. Grodzovskii, Yu. N. Ivanov, and V. V. Tokarev, Low-Thrust Flight Mechanics [in Russian], Nauka, Moscow (1966).
2. V. A. Ivanov and N. V. Faldin, Theory of Optimal Automatic Control Systems [in Russian], Nauka, Moscow (1981).
3. B. N. Kiforenko, “Motion in nearly circular orbits using propulsion systems with energy storage,” Inzh. Zh. Mekh. Tverd. Tela, No. 3, 152–157 (1967).
4. B. N. Kiforenko, Z. V. Pasechnik, and I. Yu. Vasil’ev, “Averaging of motion equations in the problem of optimization with respect to operating speed of interorbital transfer with thrust of constant value in a strong central gravity field,” J. Autom. Inform. Sci., 33, No. 11, 53–66 (2001).
5. Ya. V. Tkachenko, “Optimal quasi-circular motion of a spacecraft with an energy storage device,” Int. Appl. Mech., 35, No. 10, 1059–1067 (1999).