@article{1077489795, author = {Wardwell, James F.}, title = {Non-separating transformations}, journal = {Duke Math. J.}, volume = {2}, number = {1}, year = {1936}, pages = { 745-750}, language = {en}, url = {http://dml.mathdoc.fr/item/1077489795} }
Wardwell, James F. Non-separating transformations. Duke Math. J., Tome 2 (1936) no. 1, pp. 745-750. http://gdmltest.u-ga.fr/item/1077489795/