@article{VSPUI_2018_14_3_a6,
     author = {V. N. Ushakov and A. A. Uspenskii and A. A. Ershov},
     title = {Alpha-sets in finite-dimensional {Euclidean} spaces},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {261--272},
     year = {2018},
     volume = {14},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2018_14_3_a6/}
}