Differential geometrical methods in mathematical physics II : proceedings, University of Bonn, July 13-16, 1977 / edited by K. Bleuler, H. R. Petry, and A. Reetz. (Lecture notes in mathematics ; 676)
Differential geometrical methods in mathematical physics II : proceedings, University of Bonn, July 13-16, 1977 / edited by K. Bleuler, H. R. Petry, and A. Reetz.