Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1982_263_1_a11, author = {A. V. Chechkin}, title = {Ultramappings of topological spaces}, journal = {Doklady Akademii Nauk}, pages = {51--55}, publisher = {mathdoc}, volume = {263}, number = {1}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1982_263_1_a11/} }
A. V. Chechkin. Ultramappings of topological spaces. Doklady Akademii Nauk, Tome 263 (1982) no. 1, pp. 51-55. http://geodesic.mathdoc.fr/item/DAN_1982_263_1_a11/