1. Handbook of Mathematical Functions With Formulas, Graphs and Mathematical Tables;Abramowitz,1972
2. Inverse Scattering Problem;Agranovich,1960
3. Abstract Cauchy problems of the elliptic type;Balakrishnan;Bull. Am. Math. Soc.,1958
4. Transformations, Transmutations and Kernel Functions. Vols. 1, 2;Begehr,1993
5. Related problems in partial differential equations;Bragg;Bull. Am. Soc.,1968