Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1991_50_1_a13, author = {I. V. Chekalov}, title = {Cartan extensions of stabilizers of exterior forms}, journal = {Matemati\v{c}eskie zametki}, pages = {118--121}, publisher = {mathdoc}, volume = {50}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a13/} }
I. V. Chekalov. Cartan extensions of stabilizers of exterior forms. Matematičeskie zametki, Tome 50 (1991) no. 1, pp. 118-121. http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a13/