@article{JRAM_1939__180_150053,
     author = {Ernst Graeser},
     title = {Potentialstr\"omungen in {Kanalsytemen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {86--96},
     year = {1939},
     volume = {180},
     zbl = {0020.12803},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1939__180_150053/}
}