1. Gray, A., Mathews, G.B.: A Treatise on Bessel Functions and Their Applications to Physics. Gray, A., MacRobert, T.M. (eds.): 2nd edn. Macmillan, London (1922)
2. Whittaker, E.T., Watson, G.N.: A Course of Modern Analysis, 4th edn. Cambridge University Press, Cambridge (1927)
3. Staff of the Bateman Manuscript Project, Higher Transcendental Functions, vols. I and II. McGraw-Hill, New York (1953); vol. III. McGraw-Hill, New York (1955)
4. Wang, Z.X., Guo, D.R.: Special Functions. World Scientific, Singapore (1989)
5. Encyclopedia of Mathematics and Its Applications;G.E. Andrews,1999