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@article{INTG_1991_23_a2, author = {I. Kol\'a\v{r}}, title = {Natural bundles and operators}, journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara}, pages = {67--98}, publisher = {mathdoc}, volume = {23}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/INTG_1991_23_a2/} }
I. Kolář. Natural bundles and operators. Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara, Itogi Nauki i Tekhniki. Seriya "Problemy Geometrii", Tome 23 (1991), pp. 67-98. http://geodesic.mathdoc.fr/item/INTG_1991_23_a2/