@article{MZM_1975_17_2_a2,
     author = {V. A. Koshcheev},
     title = {The connectivity and approximative properties of sets in linear normed spaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {193--204},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_17_2_a2/}
}