@article{CM_1993__89_3_315_0,
     author = {Drozd, Y. A. and Greuel, G.-M.},
     title = {Cohen-Macaulay module type},
     journal = {Compositio Mathematica},
     pages = {315--338},
     publisher = {Kluwer Academic Publishers},
     volume = {89},
     number = {3},
     year = {1993},
     mrnumber = {1255700},
     zbl = {0794.14010},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1993__89_3_315_0/}
}