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@article{MS_1969__121_3_a3, author = {{\CYRA}.{\CYRV}. {\CYRF}{\cyru}{\cyrr}{\cyrs}{\cyri}{\cyrk}{\cyro}{\cyrv}}, title = {{\CYRO}{\cyrb} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrm} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyre} {\cyrv}{\cyrery}{\cyrr}{\cyro}{\cyrzh}{\cyrd}{\cyra}{\cyryu}{\cyrshch}{\cyri}{\cyrh}{\cyrs}{\cyrya} {\cyrerev}{\cyrl}{\cyrl}{\cyri}{\cyrp}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyro}{\cyrv}}, journal = {Matemati\v{c}eskij sbornik}, pages = {381--404}, publisher = {mathdoc}, volume = {121}, number = {3}, year = {1969}, zbl = {0185.19102}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1969__121_3_a3/} }
А.В. Фурсиков. Об одном классе вырождающихся эллиптических операторов. Matematičeskij sbornik, Tome 121 (1969) no. 3, pp. 381-404. http://geodesic.mathdoc.fr/item/MS_1969__121_3_a3/