Group Theoretical Methods in Physics Proceedings of the XVI International Colloquium Held at Varna, Bullgaria, June 15–20, 1987 - Doebner, Heinz-Dietrich 1931-2022; Hennig, Jörg-D; Palev, Tchavadar D. (Springer, 1988)
Keywords: Physik; Gruppentheorie; Konferenzschrift -- 1987 -- Varna