@article{JRAM_1969__0239_0240_150958,
     author = {J\"urgen Timm},
     title = {\"Uber die additiven {Gruppen} spezieller {Fastringe.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {47--54},
     publisher = {mathdoc},
     volume = {0239_0240},
     year = {1969},
     zbl = {0186.06601},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1969__0239_0240_150958/}
}