Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1957_117_2_a1, author = {Yu. P. Ginzburg}, title = {$J${-Non-stretching} operator functions}, journal = {Doklady Akademii Nauk}, pages = {171--173}, publisher = {mathdoc}, volume = {117}, number = {2}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_117_2_a1/} }
Yu. P. Ginzburg. $J$-Non-stretching operator functions. Doklady Akademii Nauk, Tome 117 (1957) no. 2, pp. 171-173. http://geodesic.mathdoc.fr/item/DAN_1957_117_2_a1/