Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1972__130_1_a4, author = {{\CYRA}.{\CYRM}. {\CYRL}{\cyre}{\cyro}{\cyrn}{\cyrt}{\cyro}{\cyrv}{\cyri}{\cyrch}}, title = {{\CYRS}{\cyrk}{\cyro}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrs}{\cyrh}{\cyro}{\cyrd}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrv} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyre}}, journal = {Matemati\v{c}eskij sbornik}, pages = {88--117}, publisher = {mathdoc}, volume = {130}, number = {1}, year = {1972}, zbl = {0287.34047}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1972__130_1_a4/} }
А.М. Леонтович. Скорость сходимости в задаче. Matematičeskij sbornik, Tome 130 (1972) no. 1, pp. 88-117. http://geodesic.mathdoc.fr/item/MS_1972__130_1_a4/