Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1971__12_2_a8, author = {Bure\v{s}, Jarol{\'\i}m}, title = {Differential operators and $G$-structures of higher order}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {327--335}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1971}, mrnumber = {0293530}, zbl = {0216.43703}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_2_a8/} }
Bureš, Jarolím. Differential operators and $G$-structures of higher order. Commentationes Mathematicae Universitatis Carolinae, Tome 12 (1971) no. 2, pp. 327-335. http://geodesic.mathdoc.fr/item/CMUC_1971__12_2_a8/