@article{bwmeta1.element.bwnjournal-article-cmv12i2p209bwm,
author = {S. Franklin},
title = {Open and image-open relations},
journal = {Colloquium Mathematicae},
volume = {13},
year = {1964},
pages = {209-211},
zbl = {0134.18803},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-cmv12i2p209bwm}
}
Franklin, S. Open and image-open relations. Colloquium Mathematicae, Tome 13 (1964) pp. 209-211. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-cmv12i2p209bwm/