@article{DAN_1964_155_2_a0,
     author = {A. Arkhangel'skii},
     title = {On factor maps of metric spaces},
     journal = {Doklady Akademii Nauk},
     pages = {247--250},
     publisher = {mathdoc},
     volume = {155},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_2_a0/}
}