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@article{MS_1976__141_3_a1, author = {{\CYRS}.{\CYRA}. {\CYRS}{\cyrm}{\cyra}{\cyrg}{\cyri}{\cyrn}}, title = {{\CYRK}{\cyro}{\cyrm}{\cyrp}{\cyrl}{\cyre}{\cyrk}{\cyrs}{\cyrn}{\cyrery}{\cyre} {\cyrs}{\cyrt}{\cyre}{\cyrp}{\cyre}{\cyrn}{\cyri} {\cyrg}{\cyri}{\cyrp}{\cyro}{\cyrerev}{\cyrl}{\cyrl}{\cyri}{\cyrp}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm} {\cyrv} $R^n$}, journal = {Matemati\v{c}eskij sbornik}, pages = {331--341}, publisher = {mathdoc}, volume = {141}, number = {3}, year = {1976}, zbl = {0346.35029}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1976__141_3_a1/} }
С.А. Смагин. Комплексные степени гипоэллиптических систем в $R^n$. Matematičeskij sbornik, Tome 141 (1976) no. 3, pp. 331-341. http://geodesic.mathdoc.fr/item/MS_1976__141_3_a1/