@article{BAG_1974__3_138106,
     author = {W. KLEINERT},
     title = {Zur {Theorie} der perfekten und quasi perfekten {Moduln}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {69--122},
     publisher = {mathdoc},
     volume = {3},
     year = {1974},
     zbl = {0293.13004},
     url = {http://geodesic.mathdoc.fr/item/BAG_1974__3_138106/}
}