1. Transmutations, Transformations and Kernel Functions;Begher,1992
2. Integral Operators in the Theory of Linear Partial Differential Equations;Bergman,1969
3. Inverse Acoustic and Electromagnetic Scattering;Colton,1992
4. Function Theoretic Methods in Partial Differential Equations;Gilbert,1969
5. Analytic Methods in Mathematical Physics;Gilbert,1970