TY - DATA AU - Karl H. Hofmann TI - Tulane University Ring and Operator Theory Year, 1970-1971 T2 - Lecture Notes in Mathematics SN - 9783540371175 PY - 1972/// CY - Heidelberg PB - Springer Berlin KW - Mathematics and Statistics UR - https://doi.org/10.1007/BFb0058550 ER -