1. Integral Operators in the Theory of Linear Partial Differential Equations. Berlin 1961.
2. Higher Order Pseudoparabolic Partial Differential Equations. Ph. D. Dissertation, Indiana University 1974.
3. and , Integral operators generating solutions of δ32ut + Aδ3ut + Aδ3u + Cu = 0 (To appear).
4. and , A function theoretic approach to higher order pseudoparabolic equations. (To appear).
5. Bergman operators for elliptic equations in three independent variables