1. Chelnokov, Yu.N., Quaternion regularization in astrodynamics and trajectory motion control, Vestnik Nizhegorod. Univ. im. N.I. Lobachevskogo, 2011, no. 4 (5), pp. 2583–2585.
2. Chelnokov, Yu.N., Quaternion regularization in celestial mechanics and astrodynamics and trajectory motion control. I, Kosm. Issled., 2013, vol. 51, no. 5, p. 389–401. [Cosmic Research, pp. 353–364].
3. Duboshin, G.N., Nebesnaya mekhanika. Osnovnye zadachi i metody (Celestial Mechanics: Basic Problems and Methods), Moscow: Nauka, 1968.
4. Abalakin, V.K., Aksenov, E.P., Grebenikov, E.A., Demin, V.G., and Ryabov, Yu.A., Spravochnoe rukovodstvo po nebesnoi mekhanike i astrodinamike (Reference Manual on Celestial Mechanics and Astrodynamics), Moscow: Nauka, 1976.
5. Deprit, A., Ideal frames for perturbed Keplerian motions, Celestial Mechanics, 1976, vol. 13, no. 2, pp. 253–263.