@article{CMH_1953__27_139054,
     author = {I. Sz\'ep\'al},
     title = {\"Uber die untere {Grenze} der {Ordnung} n-stufig nichtkommutativer {Gruppen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {73--74},
     publisher = {mathdoc},
     volume = {27},
     year = {1953},
     url = {http://geodesic.mathdoc.fr/item/CMH_1953__27_139054/}
}