@article{GDZPPN002383616, title = {Linear Connection in Spin-Collineation Space.}, journal = {Mathematische Zeitschrift}, volume = {59}, year = {1953}, pages = {265-271}, zbl = {0051.39801}, url = {http://dml.mathdoc.fr/item/GDZPPN002383616} }
Ingraham, Richard L. Linear Connection in Spin-Collineation Space.. Mathematische Zeitschrift, Tome 59 (1953) pp. 265-271. http://gdmltest.u-ga.fr/item/GDZPPN002383616/