@article{bwmeta1.element.bwnjournal-article-smv37i1p12bwm,
author = {W. \.Zelazko},
title = {On permanently singular elements in commutative m-convex locally convex algebras},
journal = {Studia Mathematica},
volume = {40},
year = {1971},
pages = {181-190},
zbl = {0214.13704},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv37i1p12bwm}
}
Żelazko, W. On permanently singular elements in commutative m-convex locally convex algebras. Studia Mathematica, Tome 40 (1971) pp. 181-190. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv37i1p12bwm/