Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1962__99_2_a5, author = {{\CYRV}.{\CYRV}. {\CYRG}{\cyrr}{\cyru}{\cyrsh}{\cyri}{\cyrn}}, title = {{\CYRO} $Q$-{\cyrg}{\cyri}{\cyrp}{\cyro}{\cyrerev}{\cyrl}{\cyrl}{\cyri}{\cyrp}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrh}}, journal = {Matemati\v{c}eskij sbornik}, pages = {233--240}, publisher = {mathdoc}, volume = {99}, number = {2}, year = {1962}, zbl = {0104.07302}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1962__99_2_a5/} }
В.В. Грушин. О $Q$-гипоэллиптических уравнениях. Matematičeskij sbornik, Tome 99 (1962) no. 2, pp. 233-240. http://geodesic.mathdoc.fr/item/MS_1962__99_2_a5/