@article{MZ_1978__164_172761,
     author = {Roger Wiegand and Wolmer Vasconcelos},
     title = {Bounding the {Number} of {Generators} of a {Module.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--8},
     year = {1978},
     volume = {164},
     zbl = {0362.13004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__164_172761/}
}