@article{bwmeta1.element.bwnjournal-article-smv22i1p3bwm,
author = {H. Gindler and A. Taylor},
title = {The minimum modulus of a linear operator and its use in spectral theory},
journal = {Studia Mathematica},
volume = {22},
year = {1962},
pages = {15-41},
zbl = {0109.08702},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv22i1p3bwm}
}
Gindler, H.; Taylor, A. The minimum modulus of a linear operator and its use in spectral theory. Studia Mathematica, Tome 22 (1962) pp. 15-41. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv22i1p3bwm/