1. 4Sergeyevsky, A. B., Snyder, G. C., and Cunniff, R. A., Interplanetary Mission Design Handbook, Vol.1, p. 2, JPL Pub. 82-43, Pasadena,CA, Sept.15,1983, pp.9-18.
2. 5Bate, R. R., Mueller, D. D., and White, J. E., Fundamentals ofAstrodynamics, Dover, New York, 1971, pp.140-143.