@article{MAN_1929__101_159352,
     author = {St. Bergmann},
     title = {Zur {Theorie} der algebraischen {Potentialfunktionen} des dreidimensionalen {Raumes.} {II.}},
     journal = {Mathematische Annalen},
     pages = {534--558},
     year = {1929},
     volume = {101},
     zbl = {55.0289.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1929__101_159352/}
}