@article{MAN_1935__110_159733,
     author = {G. Bol},
     title = {\"Uber {Drei-Gewebe} im vierdimensionalen {Raum.} {(Topologische} {Fragen} der {Differentialgeometrie} 59)},
     journal = {Mathematische Annalen},
     pages = {431--463},
     publisher = {mathdoc},
     volume = {110},
     year = {1935},
     zbl = {0010.22203},
     url = {http://geodesic.mathdoc.fr/item/MAN_1935__110_159733/}
}