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@article{MZ_1967__102_170878, author = {Richard G. Swan}, title = {The {Number} of {Generators} of a {Module.}}, journal = {Mathematische Zeitschrift}, pages = {318--322}, publisher = {mathdoc}, volume = {102}, year = {1967}, zbl = {0156.27403}, url = {http://geodesic.mathdoc.fr/item/MZ_1967__102_170878/} }
Richard G. Swan. The Number of Generators of a Module.. Mathematische Zeitschrift, Tome 102 (1967), pp. 318-322. http://geodesic.mathdoc.fr/item/MZ_1967__102_170878/