Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1983_34_5_a2, author = {O. Ya. Shvabau\`er}, title = {Widths of a class of differentiale functions}, journal = {Matemati\v{c}eskie zametki}, pages = {663--682}, publisher = {mathdoc}, volume = {34}, number = {5}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1983_34_5_a2/} }
O. Ya. Shvabauèr. Widths of a class of differentiale functions. Matematičeskie zametki, Tome 34 (1983) no. 5, pp. 663-682. http://geodesic.mathdoc.fr/item/MZM_1983_34_5_a2/