@article{JRAM_1934__170_149864,
     author = {Alexander Ostrowski},
     title = {\"Uber {Nullstellen} stetiger {Funktionen} zweier {Variabeln.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {83--94},
     publisher = {mathdoc},
     volume = {170},
     year = {1934},
     zbl = {59.0281.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1934__170_149864/}
}