@article{JRAM_1973__261_151326,
     author = {Tibor Katrin\'ak},
     title = {Primitive {Klassen} von modularen {S-Algebren.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {55--70},
     publisher = {mathdoc},
     volume = {261},
     year = {1973},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__261_151326/}
}