@article{MAN_1933__108_159620,
     author = {A. Kurosch},
     title = {\"Uber freie {Produkte} von {Gruppen}},
     journal = {Mathematische Annalen},
     pages = {26--36},
     publisher = {mathdoc},
     volume = {108},
     year = {1933},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__108_159620/}
}