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@article{PORMA_1957__16_3_114791, author = {Griffin, J.S. jr.}, title = {Affine connections in terms of the tangent bundle}, journal = {Portugaliae mathematica}, pages = {95--108}, publisher = {mathdoc}, volume = {16}, number = {3}, year = {1957}, mrnumber = {0123266}, zbl = {0090.12701}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1957__16_3_114791/} }
Griffin, J.S. jr. Affine connections in terms of the tangent bundle. Portugaliae mathematica, Tome 16 (1957) no. 3, pp. 95-108. http://geodesic.mathdoc.fr/item/PORMA_1957__16_3_114791/