@article{MZ_1949__51_169060,
     author = {K., Maruhn},
     title = {\"Uber einige {Klassen} nichtlinearer {Randwertaufgaben} der {Potentialtheorie}},
     journal = {Mathematische Zeitschrift},
     pages = {36--60},
     publisher = {mathdoc},
     volume = {51},
     year = {1949},
     zbl = {0029.21304},
     url = {http://geodesic.mathdoc.fr/item/MZ_1949__51_169060/}
}