@article{DAN_1990_314_2_a11,
     author = {V. P. Fonf},
     title = {Topological properties of subsets, and linear-topological},
     journal = {Doklady Akademii Nauk},
     pages = {309--311},
     publisher = {mathdoc},
     volume = {314},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_2_a11/}
}