@article{MM2_1986__57_155183,
     author = {Luise Unger},
     title = {Lower {Bounds} for faithful, preinjective modules.},
     journal = {Manuscripta mathematica},
     pages = {1--32},
     publisher = {mathdoc},
     volume = {57},
     year = {1986},
     zbl = {0608.16030},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__57_155183/}
}