Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "International Conference on Differential Geometric Methods in Mathematical Physics and Doebner, Heinz Dietrich and Andersson, Stig Ingvar and Petry, Herbert Rainer","Differential geometric methods in mathematical physics : Clausthal 1980 : proceedings of an international conference held at the Technical University of Clausthal, FRG, July 23-25, 1980",,Springer-Verlag,1982,Lecture notes in mathematics,,"3540111972,0387111972",,https://cir.nii.ac.jp/crid/1130282269101113984