1. Stanley, D., Cook, S., Connolly, J., et al. NASA’s exploration system architecture study. NASA TM-2005-214062, 2005.
2. Gill, T. NASA’s lunar orbital platform-Gateway. In: Proceedings of the 45th Space Congress, 2018.
3. Bureau, E. T. India’s moonshot: All about Chandrayaan-2. Available at http://econimicstime.indiatimes.com/news/science/indias-moonshot-all-about-chandrayaan-2/articleshow/70338414.cms (cited 23 July 2019).
4. Topputo, F. On optimal two-impulse Earth-Moon transfers in a four-body model. Celestial Mechanics and Dynamical Astronomy, 2013, 117(3): 279–313.
5. Gong, S. P., Li, J. F., Baoyin, H. X., Gao, Y. F. Lunar landing trajectory design based on invariant manifold. Applied Mathematics and Mechanics, 2007, 28(2): 201–207.