1. Analytical trajectories for extremal motion with low-thrust exhaust-modulated propulsion;Bishop;Journal of Spacecraft and Rockets,2001
2. New classes of optimal analytical space trajectories;Azimov,2002
3. Table of Integrals, Series, and Products;Gradshtein,1965
4. Extremal rocket motion with maximum thrust in a linear central field;Azimov;Journal of Spacecraft and Rockets,2001