Classical and quantum systems : foundations and symmetries : proceedings of the II International Wigner symposium, Goslar, Germany, July 16-20, 1991 - International Wigner Symposium (2nd : 1991 : Goslar, Germany); Doebner, H. D.; Scherer, W.; Schroeck, F. (Singapore : World Scientific, 1993)
Keywords: Symmetry (Physics) -- Congresses; Quantum theory -- Congresses