TY - BOOK AU - Bleuler K Ed. AU - Petry H R Ed. AU - Reetz A Ed. ED - Conference on differential geometrical PH mathods in mathematics physics (1977 : Bonn) TI - Proceeding on differential geometrical methods in mathematical physics T2 - Lecture notes in mathematics; 676 U1 - B6:(C)p5,N77, L8 PY - 1978/// CY - Berlin PB - Springer Verlag KW - Geometrical physics ER -