Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1990_314_5_a7, author = {Yu. V. Egorov and Nguen Min' Chi}, title = {Maximally hypoelliptic operators with a noninvolutive}, journal = {Doklady Akademii Nauk}, pages = {1059--1061}, publisher = {mathdoc}, volume = {314}, number = {5}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a7/} }
Yu. V. Egorov; Nguen Min' Chi. Maximally hypoelliptic operators with a noninvolutive. Doklady Akademii Nauk, Tome 314 (1990) no. 5, pp. 1059-1061. http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a7/