1. Taff, L.G.: Computational Spherical Astronomy. New York: John Wiley & Sons (1981).
2. Murray, C.A.: Vectorial Astrometry, Bristol BS1 6NX: Adam Hilger Ltd, Techno House, Redcliffe Way (1983).
3. Green, R.M.: Spherical Astronomy. Cambridge: Cambridge University Press (1985).
4. Kovalevsky, J.: Modern Astrometry. Berlin: Springer Verlag (1995).
5. Proceedings of the 48th Colloquium of the IAU, “Modern Astrometry”, held in Vienna, Austria, Sept. 11–14, 1978 (F.V. Prochazka, R.H. Tucker, eds.), Vienna: Institute of Astronomy (University Observatory) (1978).