1. The Mathematical Theory of Optimal Processes;Pontryagin,1969
2. An optimal control which minimizes the extremum of a function of the phase coordinates;Kuznetsov;Kibernetika,1968
3. The perturbed time-optimal problem of controlling the final position of a point mass by means of a limited force;Akulenko;Prikl. Mat. Mekh.,1994
4. The Mechanics of Space Flight;Grodzovskii,1975
5. Space Flight with a Solar Sail;Polyakova,1986