@article{1103038896, author = {O'Neill, Barrett}, title = {An algebraic criterion for immersion.}, journal = {Pacific J. Math.}, volume = {9}, number = {4}, year = {1959}, pages = { 1239-1247}, language = {en}, url = {http://dml.mathdoc.fr/item/1103038896} }
O'Neill, Barrett. An algebraic criterion for immersion.. Pacific J. Math., Tome 9 (1959) no. 4, pp. 1239-1247. http://gdmltest.u-ga.fr/item/1103038896/