TY - DATA AU - H.-D. Doebner AU - H. R. Petry AU - S. I. Andersson TI - Differential Geometric Methods in Mathematical Physics T2 - Lecture Notes in Mathematics SN - 9783540390022 PY - 1982/// CY - Heidelberg PB - Springer Berlin KW - Mathematics and Statistics UR - https://doi.org/10.1007/BFb0092421 ER -