@article{MAN_1928__99_159278,
     author = {N. Tschebotareff},
     title = {\"Uber die {Realit\"at} von {Nullstellen} ganzer transzendenter {Funktionen}},
     journal = {Mathematische Annalen},
     pages = {660--686},
     publisher = {mathdoc},
     volume = {99},
     year = {1928},
     zbl = {54.0351.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1928__99_159278/}
}