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@article{MAN_1964__155_161192, author = {P.A. GRIFFITHS}, title = {Deformations of {G-Structures.} {Part} {A:} {General} {Theory} of {Deformations.}}, journal = {Mathematische Annalen}, pages = {292--315}, publisher = {mathdoc}, volume = {155}, year = {1964}, zbl = {0133.15503}, url = {http://geodesic.mathdoc.fr/item/MAN_1964__155_161192/} }
P.A. GRIFFITHS. Deformations of G-Structures. Part A: General Theory of Deformations.. Mathematische Annalen, Tome 155 (1964), pp. 292-315. http://geodesic.mathdoc.fr/item/MAN_1964__155_161192/