Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_2011_90_5_a12, author = {D. V. Egorov}, title = {QR-Submanifolds and {Riemannian} {Metrics} with {Holonomy} $G_2$}, journal = {Matemati\v{c}eskie zametki}, pages = {781--784}, publisher = {mathdoc}, volume = {90}, number = {5}, year = {2011}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_5_a12/} }
D. V. Egorov. QR-Submanifolds and Riemannian Metrics with Holonomy $G_2$. Matematičeskie zametki, Tome 90 (2011) no. 5, pp. 781-784. http://geodesic.mathdoc.fr/item/MZM_2011_90_5_a12/