@article{JRAM_1950__187_150163,
     author = {Werner Schmeidler},
     title = {\"Uber unbeschr\"ankt iterierbare {Operatoren.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {109--114},
     publisher = {mathdoc},
     volume = {187},
     year = {1950},
     zbl = {0035.35803},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1950__187_150163/}
}