1. Pluto express sciencecraft system design
2. Williams, S. N. “Automated Design of Multiple Encounter Gravity-Assist Trajectories,” M.S. Thesis, School of Aeronautics and Astronautics,Purdue Univ., West Lafayette,IN, Aug. 1990.
3. Patel, M. R. “Automated Design of Delta-V Gravity-Assist Trajectories for Solar System Exploration,” M.S. Thesis, School of Aeronautics and Astronautics,Purdue Univ., West Lafayette,IN, Aug. 1993.