Proceedings of the Symposium on Differential Equations and Dynamical Systems University of Warwick, September 1968 - August 1969, Summer School, July 15 - 25, 1969
Japan-United States Seminar on Ordinary Differential and Functional Equations Held in Kyoto/Japan, September 6-11. 1971
The Many Facets of Graph Theory Proceedings of the Conference held at Western Michigan University, Kalamazoo/MI., October 31 - November 2, 1968
Local Theory of Nonlinear Analytic Ordinary Differential Equations (Lecture Notes in Mathematics, 702)
Conference on the Numerical Solution of Differential Equations Held in Dundee/Scotland, June 23-27, 1969
Analytic Functions
The Theory of Arithmetic Functions: Proceedings of the Conference at Western Michigan University, April 29 - May 1, 1971 (Lecture Notes in Mathematics, 251)
Theorie der Differentialgleichungen Vorlesungen aus dem Gesamtgebiet der Gewöhnlichen und der Partiellen Differentialgleichungen
Several Complex Variables. Maryland 1970. Proceedings of the International Mathematical Conference, Held at College Park, April 6-17, 1970 Part 1
Gewöhnliche Differential-gleichungen Eine Einführung