@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/