1. AIAA education series;R.H. Battin,1999
2. Danby, J.M.A.: Fundamentals of Celestial Mechanics, 2nd, rev. edn. Willman-Bell, Richmond (1988)
3. Gautschi, W.: SIAM Rev. 9(1), 24 (1967)
4. Dover Books on Mathematics;A. Ralston,2001
5. Sharaf, A.M., Saad, A.S.: Astrophys. Space Sci. 347 (2014)