@article{DAN_1981_260_1_a1,
     author = {E. M. Aniskovich},
     title = {On subspaces of sequential spaces},
     journal = {Doklady Akademii Nauk},
     pages = {13--17},
     year = {1981},
     volume = {260},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_260_1_a1/}
}