@article{1183524326,
author = {S\l owikowski, W.},
title = {Quotient spaces and the open map theorem},
journal = {Bull. Amer. Math. Soc.},
volume = {67},
number = {6},
year = {1961},
pages = { 498-500},
language = {en},
url = {http://dml.mathdoc.fr/item/1183524326}
}
Słowikowski, W. Quotient spaces and the open map theorem. Bull. Amer. Math. Soc., Tome 67 (1961) no. 6, pp. 498-500. http://gdmltest.u-ga.fr/item/1183524326/