@article{1077475895, author = {Levine, Jack}, title = {Fields of parallel vectors in conformally flat spaces}, journal = {Duke Math. J.}, volume = {17}, number = {1}, year = {1950}, pages = { 15-20}, language = {en}, url = {http://dml.mathdoc.fr/item/1077475895} }
Levine, Jack. Fields of parallel vectors in conformally flat spaces. Duke Math. J., Tome 17 (1950) no. 1, pp. 15-20. http://gdmltest.u-ga.fr/item/1077475895/