Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MT_1996_31_a4, author = {A. V. Greshnov}, title = {Extension of differentiable functions beyond the boundary of the domain on {Carnot} groups}, journal = {Matemati\v{c}eskie trudy}, pages = {161--186}, publisher = {mathdoc}, volume = {31}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_1996_31_a4/} }
A. V. Greshnov. Extension of differentiable functions beyond the boundary of the domain on Carnot groups. Matematičeskie trudy, Tome 31 (1996), pp. 161-186. http://geodesic.mathdoc.fr/item/MT_1996_31_a4/