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@article{MZ_1953__58_169350, author = {Richard L. Ingraham}, title = {Linear {Connection} in {Spin-Collineation} {Space.}}, journal = {Mathematische Zeitschrift}, pages = {265--271}, publisher = {mathdoc}, volume = {58}, year = {1953}, zbl = {0051.39801}, url = {http://geodesic.mathdoc.fr/item/MZ_1953__58_169350/} }
Richard L. Ingraham. Linear Connection in Spin-Collineation Space.. Mathematische Zeitschrift, Tome 58 (1953), pp. 265-271. http://geodesic.mathdoc.fr/item/MZ_1953__58_169350/