@article{JRAM_1953__191_150228,
     author = {Gottfried K\"othe},
     title = {Dualit\"at in der {Funktionentheorie.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {30--49},
     year = {1953},
     volume = {191},
     zbl = {0050.33502},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1953__191_150228/}
}