@article{MZ_1933__37_168480,
     author = {G. Szeg\"o},
     title = {\"Uber gewisse {Potenzreihen} mit lauter positiven {Koeffizienten.}},
     journal = {Mathematische Zeitschrift},
     pages = {674--688},
     publisher = {mathdoc},
     volume = {37},
     year = {1933},
     zbl = {0007.34401},
     url = {http://geodesic.mathdoc.fr/item/MZ_1933__37_168480/}
}