@article{701412,
     title = {All natural concomitants of vector valued differential forms},
     booktitle = {Proceedings of the Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1987},
     pages = {[101]-108},
     mrnumber = {MR0946715},
     zbl = {0642.53017},
     url = {http://dml.mathdoc.fr/item/701412}
}

Kolář, Ivan; Michor, Peter W. All natural concomitants of vector valued differential forms, dans Proceedings of the Winter School "Geometry and Physics", GDML_Books,  (1987), pp. [101]-108. http://gdmltest.u-ga.fr/item/701412/