1. Solar System evolution from compositional mapπng of the asteroid belt;DeMeo;Nature,2014
2. Comparative analysis of redirection methods for asteroid resource exploitation;Bazzocchi;Acta Astronautica March-April,2016
3. Die erreichbarkeit der Himmelskorper, oldenbourg: munich, Germany, 1925, the attainability of heavenly bodies;Hohmann;NASA Tech. Translation F-44,1960
4. Minimal rocket trajectories;Lawden;J. Am. Rocket Soc.,1953
5. Characteristic velocity requirements for impulsive thrust transfers between non Co-planar circular orbits;Rider;AIAA J March,1961