@article{JRAM_1972__253_151201,
     author = {Jan-Erik Bj\"ork},
     title = {Radical properties of perfect modules.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {78--86},
     publisher = {mathdoc},
     volume = {253},
     year = {1972},
     zbl = {0228.16011},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__253_151201/}
}