@article{1256044750, author = {Welsh, David J.}, title = {Manifolds that admit parallel vector fields}, journal = {Illinois J. Math.}, volume = {30}, number = {3}, year = {1986}, pages = { 9-18}, language = {en}, url = {http://dml.mathdoc.fr/item/1256044750} }
Welsh, David J. Manifolds that admit parallel vector fields. Illinois J. Math., Tome 30 (1986) no. 3, pp. 9-18. http://gdmltest.u-ga.fr/item/1256044750/