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@article{MS_1972__131_1_a3, author = {{\CYRZ}.{\CYRD}. {\CYRU}{\cyrs}{\cyrm}{\cyra}{\cyrn}{\cyro}{\cyrv}}, title = {{\CYRK} {\cyrv}{\cyro}{\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyru} {\cyro} {\cyrd}{\cyre}{\cyrf}{\cyro}{\cyrr}{\cyrm}{\cyra}{\cyrc}{\cyri}{\cyri} {\cyrp}{\cyro}{\cyrv}{\cyre}{\cyrr}{\cyrh}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrs} {\cyrt}{\cyro}{\cyrch}{\cyrk}{\cyro}{\cyrishrt} {\cyru}{\cyrp}{\cyrl}{\cyro}{\cyrshch}{\cyre}{\cyrn}{\cyri}{\cyrya}}, journal = {Matemati\v{c}eskij sbornik}, pages = {61--82}, publisher = {mathdoc}, volume = {131}, number = {1}, year = {1972}, zbl = {0258.53006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1972__131_1_a3/} }
З.Д. Усманов. К вопросу о деформации поверхности с точкой уплощения. Matematičeskij sbornik, Tome 131 (1972) no. 1, pp. 61-82. http://geodesic.mathdoc.fr/item/MS_1972__131_1_a3/