Approximation Theory: Proceedings of an International Conference held at Bonn, Germany, June 8-11, 1976 (Lecture Notes in Mathematics, 556) (German, English and French Edition)
Functional Differential Equations and Bifurcation: Proceedings of a Conference, Held at Sao Carlos, Brazil, July 2-7, 1979 (Lecture Notes in Mathematics, 799)
Fixed Point Theory: Proceedings of a Conference Held at Sherbrooke, Quebec, Canada, June 2-21, 1980 (Lecture Notes in Mathematics 886)
Numerical Treatment of Differential Equations: Proceedings of a Conference, Held at Oberwolfach, July 4-10, 1976 (Lecture Notes in Mathematics, 631) (English and German Edition)
Functional Analysis and Approximation Proceedings of the Conference Held at the Mathematical Research Institute at Oberwolfach, Black Forest, August 9-16, 1980
Anniversary Volume on Approximation Theory and Functional Analysis
Constructive and Computational Methods for Differential and Integral Equations: Symposium, Indiana University, February 17-20, 1974 (Lecture Notes in Mathematics, 430)
Pade Approximations and its Applications: Proceedings of a Conference held at Bad Honnef, Germany, March 7-10, 1983 (Lecture Notes in Mathematics, 1071) (English and French Edition)
Numerical Treatment of Differential Equations in Applications: Proceedings, Oberwolfach, Germany, December 1977 (Lecture Notes in Mathematics, 679)
Numerische, insbesondere approximationstheoretische Behandlung von Funktionalgleichungen Vorträge einer Tagung im Mathematischen Forschungsinstitut Oberwolfach, 4.-8.12.1972