1. Survey of impulsive trajectories;Gobetz;AIAA J.,1969
2. Optimum impulsive orbital transfers between coplanar orbits;Horner;AIAA J.,1962
3. Optimal impulsive maneuvers in orbital transfers;Sgubini,2002
4. Optimization Techniques: with Applications to Aerospace Systems;Lawden,1962
5. Fuel requirements for inter-orbital transfer of a rocket;Plimmer,1959