1. Steinborn,E.O., Filter,E.: Theoret. Chim. Acta (Berl.)38, 247 (1975)
2. Steinborn,E.O., Filter,E.: Theoret. Chim. Acta (Berl.)38, 261 (1975)
3. Rainville,E.D.: Special functions, p. 284. New York: Chelsea Publ. 1960. We thank Professor B. C. Carlson for this reference, which came to our knowledge after completion of this and the preceding manuscripts
4. Magnus,W., Oberhettinger,F., Soni,R.P.: Formulas and theorems for the special functions of mathematical physics, p. 223. Berlin: Springer 1966
5. Shavitt,I.: In: Alder,B., Fernbach,S., Rotenberg,M. (Eds.): Methods in computational physics, Vol. 2, p. 16. New York: Academic Press 1963