1. G.L. Grodzovskiy, Yu.N. Ivanov, V.V. Tokarev, Space Flight Mechanics. Optimization Problems, Nauka, Moscow, 1975, p. 702 (in Russian).
2. V.V. Beletskiy, The Essays on the Space Bodies Motion, Nauka, Moscow, 1977, p. 432 (in Russian).
3. C. Marshal, J.-P. Marec, C.B. Winn, Synthesis of the analytical results on optimal transfers between keplerian orbits, Proceedings of the XVIII Astronautic International Congress, Belgrade, 25–29 September 1967, Publication ONERA, N515, 1967, p. 35.
4. Yu.N. Ivanov, V.V. Tokarev, Yu.V. Shalaev, Optimal trajectories and parameters of the space vehicles with power-limited propulsion, Space Explorations 2(3) (1964) (in Russian).
5. V.V. Beletskiy, V.A. Egorov, Space vehicle boost in the planet's activity sphere, Space Explorations 2(3) (1964) (in Russian).