Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_224_2_a1, author = {S. A. Bogatyi}, title = {On the preservation of shapes under mappings}, journal = {Doklady Akademii Nauk}, pages = {261--264}, publisher = {mathdoc}, volume = {224}, number = {2}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_2_a1/} }
S. A. Bogatyi. On the preservation of shapes under mappings. Doklady Akademii Nauk, Tome 224 (1975) no. 2, pp. 261-264. http://geodesic.mathdoc.fr/item/DAN_1975_224_2_a1/