@article{DAN_1969_185_1_a13,
     author = {V. V. Fedorchuk},
     title = {Mappings which do not lower the dimension},
     journal = {Doklady Akademii Nauk},
     pages = {54--57},
     publisher = {mathdoc},
     volume = {185},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_1_a13/}
}