@article{01727701,
title = {Irreducible mapping and the lightness of open mappings.},
journal = {Southwest Journal of Pure and Applied Mathematics [electronic only]},
volume = {2001},
year = {2001},
pages = {30-42},
zbl = {1003.54015},
language = {en},
url = {http://dml.mathdoc.fr/item/01727701}
}
Pyrih, Pavel; Bárta, Tomáš; Opěla, David; Růžička, Pavel; Šámal, Robert. Irreducible mapping and the lightness of open mappings.. Southwest Journal of Pure and Applied Mathematics [electronic only], Tome 2001 (2001) pp. 30-42. http://gdmltest.u-ga.fr/item/01727701/