TY - BOOK AU - Doebner H D Ed. ED - Internarional conference on differential geometric methods in mathematical physics (July : Germany) TI - Proceedings on differential geometric methods in mathematical physics T2 - Lecture Notes in Physics; 139 U1 - C:(B6:3)p1,N78, M1 PY - 1981/// CY - Berlin PB - Springer-Verlag KW - Mathematical physics ER -