1. Y. C. Tao, R. V. Ramnath, Design of a magnetic attitude control by an asymptotic method. Proceedings AIAA Journal of Guidance, Control, and Dynamics,1980. Also Report P-1138, (The Charles Stark Draper Laboratory, Cambridge, July 1980)
2. Y. C. Tao, Satellite attitude prediction by multiple scales (Massachusetts Institute of Technology, Cambridge, MA, 1979) Doctoral Dissertation
3. K. T. Alfriend, Agnetic attitude control system for dual-spin satellites. AIAA J. 13(6), (1975)
4. G. Floquet, Annales de l’Ecole Normale Superiere 2(2), (1883)
5. E. L. Ince, Ordinary differential equations (Dover, New York, 1956)