@article{LFMO_1929_2_2_a9,
     author = {W. Lwowski},
     title = {\"Uber geschlossene einseitige dreidimensionale {R\"aume}},
     journal = {Journal de la Soci\'et\'e Physico-Math\'ematique de L\'eningrade},
     pages = {104--122},
     year = {1929},
     volume = {2},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/LFMO_1929_2_2_a9/}
}