@article{JRAM_1974__0268_0269_151469,
     author = {Karl Schr\"oter},
     title = {Zur axiomatischen {Festlegung} des {Gruppenbegriffs.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {283--285},
     publisher = {mathdoc},
     volume = {0268_0269},
     year = {1974},
     zbl = {0301.20002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1974__0268_0269_151469/}
}