Differential Geometric Methods in Mathematical Physics: Proceedings of an International Conference Held at the Technical University of Clausthal, Frg, (Paperback, 1985)
Quantum Groups: Proceedings of the 8th International Workshop on Mathematical Physics, Held at the Arnold Sommerfeld Institute, Claust (Paperback, Softcover Repri)
Group 21: Physical Applications And Mathematical Aspects Of Geometry, Groups And Algebras - Proceedings Of The Xxi International Colloquium (In 2 Volu (Hardcover)