@article{MAN_1965__158_161272,
     author = {PH.A. GRIFFITHS},
     title = {Deformations of {G-Structures.} {Part} {B:} {Deformations} of {Geometric} {G-Structures.}},
     journal = {Mathematische Annalen},
     pages = {326--351},
     publisher = {mathdoc},
     volume = {158},
     year = {1965},
     zbl = {0156.42703},
     url = {http://geodesic.mathdoc.fr/item/MAN_1965__158_161272/}
}