@article{DAN_1968_181_6_a0,
     author = {A. V. Arkhangel'skii},
     title = {Mappings connected with topological groups},
     journal = {Doklady Akademii Nauk},
     pages = {1303--1306},
     publisher = {mathdoc},
     volume = {181},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_6_a0/}
}