@article{JRAM_1970__241_151000,
     author = {Heiner Lichtenberg},
     title = {Doppelmodulzerlegungen von {Gruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {87--105},
     publisher = {mathdoc},
     volume = {241},
     year = {1970},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1970__241_151000/}
}