@article{MAN_1881__18_156951,
     author = {K\"onig},
     title = {Zur {Theorie} der {Resolventen}},
     journal = {Mathematische Annalen},
     pages = {78--81},
     publisher = {mathdoc},
     volume = {18},
     year = {1881},
     zbl = {13.0086.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1881__18_156951/}
}