@article{1077376995,
author = {Wicke, H. H. and Worrell, Jr., J. M.},
title = {Open continuous mappings of spaces having bases of countable order},
journal = {Duke Math. J.},
volume = {34},
number = {1},
year = {1967},
pages = { 255-271},
language = {en},
url = {http://dml.mathdoc.fr/item/1077376995}
}
Wicke, H. H.; Worrell, Jr., J. M. Open continuous mappings of spaces having bases of countable order. Duke Math. J., Tome 34 (1967) no. 1, pp. 255-271. http://gdmltest.u-ga.fr/item/1077376995/