@article{MZ_1932__35_168348,
     author = {W., Rogosinski},
     title = {\"Uber positive harmonische {Entwicklungen} und typisch-reelle {Potenzreihen}},
     journal = {Mathematische Zeitschrift},
     pages = {93--121},
     publisher = {mathdoc},
     volume = {35},
     year = {1932},
     zbl = {0003.39303},
     url = {http://geodesic.mathdoc.fr/item/MZ_1932__35_168348/}
}