@article{JRAM_1897__118_149028,
     author = {K.Th. Vahlen},
     title = {Ueber einige {Anwendungen} des {Correspondenzprincips.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {251--256},
     publisher = {mathdoc},
     volume = {118},
     year = {1897},
     zbl = {28.0514.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1897__118_149028/}
}