@article{JRAM_1978__302_152044,
     author = {Friedhelm Hansen},
     title = {Dreiecks-Darstellung von {Endomorphismenringen} injektiver {Moduln.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {206--220},
     publisher = {mathdoc},
     volume = {302},
     year = {1978},
     zbl = {0377.16001},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__302_152044/}
}