@article{1077469828,
author = {Goffman, Casper and Neugebauer, C. J. and Nishiura, T.},
title = {Density topology and approximate continuity},
journal = {Duke Math. J.},
volume = {28},
number = {1},
year = {1961},
pages = { 497-505},
language = {en},
url = {http://dml.mathdoc.fr/item/1077469828}
}
Goffman, Casper; Neugebauer, C. J.; Nishiura, T. Density topology and approximate continuity. Duke Math. J., Tome 28 (1961) no. 1, pp. 497-505. http://gdmltest.u-ga.fr/item/1077469828/