@article{MAN_1932__106_159558,
     author = {W. Cauer},
     title = {\"Uber {Funktionen} mit positivem {Realteil}},
     journal = {Mathematische Annalen},
     pages = {CCCLXIX--CCCXCIV},
     publisher = {mathdoc},
     volume = {106},
     year = {1932},
     zbl = {58.1087.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1932__106_159558/}
}