Quantum Groups Proceedings of the 8th International Workshop on Mathematical Physics, Held at the Arnold Sommerfeld Institute, Clausthal, FRG, on 19–26 July 1989 Doebner, Heinz-Dietrich Heftet / 2014 / Engelsk
Differential Geometric Methods in Mathematical Physics Proceedings of an International Conference Held at the Technical University of Clausthal, FRG, August 30 - September 2, 1983 Doebner, Heinz-Dietrich Heftet / 1985 / Engelsk
