@article{DAN_1972_206_4_a11,
     author = {S. G. Ovsepyan},
     title = {A certain new method of constructing extensions of topological spaces},
     journal = {Doklady Akademii Nauk},
     pages = {819--822},
     year = {1972},
     volume = {206},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_4_a11/}
}