1. Izzo, D., Becerra, V.M., Myatt, D.R., Nasuto, S.J., Bishop, J.M.: Search space pruning and global optimisation of multiple gravity assist spacecraft trajectories. J. Glob. Opt. 38(2), 283–296 (2007)
2. Izzo, D.: PyGMO and PyKEP: open source tools for massively parallel optimization in astrodynamics (the case of interplanetary trajectory optimization). In: Proceedings of the Fifth International Conference on Astrodynamics Tools and Techniques, ICATT (2012)
3. Sims, J.A., Flanagan, S.N.: Preliminary design of low-thrust interplanetary missions. In: AAS/AIAA Astrodynamic Specialist Conference (1999)
4. Pontryagin, L.S., Boltyanskii, V.G., Gamkrelidze, R.V., Mishchenko, E.F.: The Mathematical Theory of Optimal Processes. Interscience, New York (1962). English translation
5. Hennes, D., Izzo, D., Landau, D.: Fast approximators for optimal low-thrust hops between main belt asteroids. In: IEEE Symposium Series on Computational Intelligence (2016)