1. Amato, D., Bombardelli, C., Baù, G., Morand, V., Rosengren, A.J.: Non-averaged regularized formulations as an alternative to semi-analytical orbit propagation methods. Celest. Mech. Dyn. Astron. 131(5), 21 (2019). https://doi.org/10.1007/s10569-019-9897-1
2. Batygin, K.: Yoshihide Kozai (1928–2018) (2018). https://www.planetary.org/blogs/guest-blogs/2018/0227-yoshihide-kozai-1928-2018.html. Visited on 13 Dec 2019
3. Beletsky, V.V.: Essays on the Motion of Celestial Bodies. Springer, Basel (2001). https://doi.org/10.1007/978-3-0348-8360-3
4. Carrico, J.J., Dichmann, D., Policastri, L., Carrico III, J., Craychee, T., Ferreira, J.: Lunar-resonant trajectory design for the Interstellar Boundary Explorer (IBEX) extended mission. In: Schaub, H., Gunter, B.C., Russell, R.P., Cerven, W.T. (eds.) Advances in the Astronautical Sciences, vol. 142. Univelt, Inc. (2011)
5. Dunbar, B.: NASA: Artemis (2019). https://www.nasa.gov/specials/artemis/index.html. Visited on 13 Dec 2019