@article{105348, author = {Jarol\'\i m Bure\v s}, title = {Differential operators and $G$-structures of higher order}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {012}, year = {1971}, pages = {327-335}, zbl = {0216.43703}, mrnumber = {0293530}, language = {en}, url = {http://dml.mathdoc.fr/item/105348} }
Bureš, Jarolím. Differential operators and $G$-structures of higher order. Commentationes Mathematicae Universitatis Carolinae, Tome 012 (1971) pp. 327-335. http://gdmltest.u-ga.fr/item/105348/
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