@article{MZ_1934__38_168516,
     author = {I. J. Schoenberg},
     title = {Zur {Abz\"ahlung} der reellen {Wurzeln} algebraischer {Gleichungen}},
     journal = {Mathematische Zeitschrift},
     pages = {546--564},
     publisher = {mathdoc},
     volume = {38},
     year = {1934},
     zbl = {0009.00401},
     url = {http://geodesic.mathdoc.fr/item/MZ_1934__38_168516/}
}