1. Montenbruck, O.: Practical Ephemeris Calculations. Springer, Berlin Heidelberg New York (1989)
2. Montenbruck, O., Pfleger, T.: Astronomie mit dem Personal Computer. Springer, Berlin Heidelberg New York (2004)
3. Taylor, J.R.: An Introduction to Error Analysis. University Science Books, Mill Valley, CA (1982)
4. Mendenthall, W.: Introduction to Probability and Statistics, 2nd edn. Wadsworth, Belmont, CA (1967)
5. Smart, W.M.: Textbook on Spherical Astronomy. Cambridge University Press, Cambridge (1977)