@article{LFMO_1927_1_2_a1,
     author = {Von W. Lwowski},
     title = {Uber geschlossenen zweiseitigen  dreidimensionalen {R\"aumen}},
     journal = {Journal de la Soci\'et\'e Physico-Math\'ematique de L\'eningrade },
     pages = {169--181},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1927},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/LFMO_1927_1_2_a1/}
}