@article{bwmeta1.element.bwnjournal-article-smv48i1p23bwm,
author = {\v Stefan Schwabik},
title = {A remark on the d-characteristic and the $d\_{$\Xi$}$-characteristic of linear operators in a Banach space},
journal = {Studia Mathematica},
volume = {48},
year = {1973},
pages = {251-255},
zbl = {0264.47003},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv48i1p23bwm}
}
Schwabik, Štefan. A remark on the d-characteristic and the $d_{Ξ}$-characteristic of linear operators in a Banach space. Studia Mathematica, Tome 48 (1973) pp. 251-255. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv48i1p23bwm/