@article{700621,
title = {On the open mapping theorem},
booktitle = {General topology and its relations to modern analysis and algebra IV},
series = {GDML\_Books},
publisher = {Society of Czechoslovak Mathematicians and Physicist},
address = {Praha},
year = {1977},
pages = {[68]-69},
mrnumber = {MR0454900},
zbl = {0365.54003},
url = {http://dml.mathdoc.fr/item/700621}
}
Byczkowski, T. On the open mapping theorem, dans General topology and its relations to modern analysis and algebra IV, GDML_Books, (1977), pp. [68]-69. http://gdmltest.u-ga.fr/item/700621/