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@article{MS_1991__182_9_a5, author = {{\CYRA}.{\CYRI}. {\CYRS}{\cyru}{\cyrb}{\cyrb}{\cyro}{\cyrt}{\cyri}{\cyrn}}, title = {{\CYRO}{\cyrb} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrm} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyre} {\cyrs}{\cyru}{\cyrb}{\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyra}}, journal = {Matemati\v{c}eskij sbornik}, pages = {1315--1330}, publisher = {mathdoc}, volume = {182}, number = {9}, year = {1991}, zbl = {0748.49003}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1991__182_9_a5/} }
А.И. Субботин. Об одном свойстве субдифференциала. Matematičeskij sbornik, Tome 182 (1991) no. 9, pp. 1315-1330. http://geodesic.mathdoc.fr/item/MS_1991__182_9_a5/