1. Grodzovskii, G.L., Ivanov, Yu.N., and Tokarev, V.V., Mekhanika kosmicheskogo poleta s maloi tyagoi (Mechanics of Low-Thrust Space Flights), Moscow: Nauka, 1966.
2. Shirazi, A., Ceberio, J., and Lozano, J., Spacecraft trajectory optimization: a review of models, objectives, approaches and solutions, Prog. Aerospace Sci., 2018, no. 8, pp. 76–98.
3. Petukhov, V.G., One numerical method to calculate optimal power-limited trajectories, Proceedings of the 24th International Electric Propulsion Conference, Moscow, 1995, IEPC-95-221.
4. Eneev, T.M., Egorov, V.A., Efimov, G.B., et al., Some methodical problems of low-thrust trajectory optimization, Preprint of Keldysh Inst. of Appl. Math., Russ. Acad. Sci., Moscow, 1996, no. 110, pp. 1–24.
5. Haberkorn, T., Martinon, P., and Gergaud, J., Low thrust minimum-fuel orbital transfer: A homotopic approach, J. Guid. Control Dyn., 2004, vol. 27, no. 6, pp. 1046–1060.