1
Quantum Groups [E-Book] : Proceedings of the 8th International Workshop on Mathematical Physics Held at the Arnold Sommerfeld Institute, Clausthal, FRG, on 19–26 July 1989 /
2
Conformal Groups and Related Symmetries Physical Results and Mathematical Background [E-Book] : Proceedings of a Symposium Held at the Arnold Sommerfeld Institute for Mathematical Physics (ASI) Technical University of Clausthal, Germany August 12–14, 1985 /