@article{MAN_1933__108_159646,
     author = {A. Wiman},
     title = {\"Uber zwei {Typen} von elliptischen {Regelfl\"achen} achten {Grades}},
     journal = {Mathematische Annalen},
     pages = {420--432},
     publisher = {mathdoc},
     volume = {108},
     year = {1933},
     zbl = {59.0639.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1933__108_159646/}
}