@article{JRAM_1962__211_150562,
     author = {Alfred Brauer and James E. Shockley},
     title = {On a problem of {Frobenius.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {215--220},
     publisher = {mathdoc},
     volume = {211},
     year = {1962},
     zbl = {0108.04604},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1962__211_150562/}
}