1. Integral Operators in the Theory of Linear Partial Differential Equations;Bergman,1961
2. Application of integral operators to singular differential equations and to computations of compressible fluid flows;Bergman,1966
3. On an initial value problem in the theory of two dimensional transonic flow patterns;Bergman;Pacific J. Mathematics,1970
4. Analytische Fortsetzung;Bieberbach,1955
5. Polynomial Expansions of Analytic Functions;Boas,1964