Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1969_186_5_a10, author = {M. M. Choban}, title = {Multivalued mappings and spaces with a countable net}, journal = {Doklady Akademii Nauk}, pages = {1023--1026}, publisher = {mathdoc}, volume = {186}, number = {5}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_5_a10/} }
M. M. Choban. Multivalued mappings and spaces with a countable net. Doklady Akademii Nauk, Tome 186 (1969) no. 5, pp. 1023-1026. http://geodesic.mathdoc.fr/item/DAN_1969_186_5_a10/