%0 Journal Article %A P.A. GRIFFITHS %T Deformations of G-Structures. Part A: General Theory of Deformations. %J Mathematische Annalen %D 1964 %P 292-315 %V 155 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1964__155_161192/ %F MAN_1964__155_161192