TY - DATA AU - K. Bleuler AU - A. Reetz AU - H. R. Petry TI - Differential Geometrical Methods in Mathematical Physics II T2 - Lecture Notes in Mathematics SN - 9783540357216 PY - 1978/// CY - Heidelberg PB - Springer Berlin KW - Mathematics and Statistics UR - https://doi.org/10.1007/BFb0063664 ER -