1
Theoretical Physics Fin de Siècle [E-Book] : Proceedings of the XII Max Born Symposium Held in Wrocław, Poland, 23–26 September 1998 /
2
Recent Developments in Mathematical Physics [E-Book] : Proceedings of the XXVI Int. Universitätswochen für Kernphysik Schladming, Austria, February 17–27, 1987 /