@article{MAN_1913__74_158644,
     author = {K. Knopp},
     title = {Bemerkung zu der vorstehenden {Arbeit} des {Herrn} {I.} {Schur.}},
     journal = {Mathematische Annalen},
     pages = {459--460},
     year = {1913},
     volume = {74},
     zbl = {44.0280.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1913__74_158644/}
}