- Doebner, Heinz Dietrich, 1931- (6)
- Andersson, Stig Ingvar, 1945- (2)
- Ali, S. Twareque (Syed Twareque) (1)
- Bulgarian Summer School on Mathematical Problems of Quantum Field Theory (1)
- Conference on Differential Geometric Methods in Theoretical Physics (1)
- Denardo, G. (Gallieno), 1935- (1)
- International Conference on Differential Geometric Methods in Mathematical Physics (1)
- International symposium (1998 : Goslar, Germany) (1)
- Keyl, M. (1)
- Palev, Tchavdar D., 1936- (1)
- Petry, Herbert Rainer (1)
- Werner, R. F. (1)