- Quantum Groups: Proceedings of the 8th International Workshop on Mathematical Physics, Held at the Arnold Sommerfeld Institute, Clausthal, Frg, on 19-26 July 1989 (Lecture Notes in Physics)
- Differential Geometric Methods in Mathematical Physics (Lecture notes in physics)
- Differential Geometric Methods in Mathematical Physics: Proceedings of a Conference Held at the Technical University of Clausthal, FRG, July 23-25, 1980 (Lecture Notes in Mathematics)
- Twistor Geometry and Non-Linear Systems: Review Lectures given at the 4th Bulgarian Summer School on Mathematical Problems of Quantum Field Theory, Held at Primorsko, Bulgaria, September 1980
- Infinite Dimensional Lie Algebras and Quantum Field Theory: Proceedings of the Varna Summer School, 1987