@article{MAN_1912__72_158556,
     author = {R. Baldus},
     title = {Zur {Theorie} der gegenseitig mehrdeutigen algebraischen {Ebenentransformationen}},
     journal = {Mathematische Annalen},
     pages = {1--36},
     publisher = {mathdoc},
     volume = {72},
     year = {1912},
     zbl = {43.0752.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1912__72_158556/}
}