1. M. Abramowitz and I. Stegun, Handbook of mathematical functions (Dover Publ., New York 1973)
2. B.H. Drittler: KKR-Greensche Funktionsmethode für das volle Zellpotential, PHD Thesis, Aachen (1991)
3. H.R. Schwarz, Numerische Mathematik (B.G. Teubner, Stuttgart 1997)
4. F. Bashforth and J.C. Adams, Theories of Capillary Action (Cambridge University Press, London 1883)
5. H. Jeffreys and B.S. Jeffreys, Methods of Mathematical Physics (Cambridge University Press, Cambridge, England 1988)