@article{TIMM_2003_9_1_a15,
     author = {A. V. Osipov},
     title = {Different kinds of closedness in $S(n)$-spaces},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {131--136},
     year = {2003},
     volume = {9},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2003_9_1_a15/}
}