@article{GDZPPN002318636,
title = {Weyl Numbers and Eigenvalues of Operators in Banach Spaces.},
journal = {Mathematische Annalen},
volume = {250},
year = {1980},
pages = {149-168},
zbl = {0428.47027},
url = {http://dml.mathdoc.fr/item/GDZPPN002318636}
}
Pietsch, Albrecht. Weyl Numbers and Eigenvalues of Operators in Banach Spaces.. Mathematische Annalen, Tome 250 (1980) pp. 149-168. http://gdmltest.u-ga.fr/item/GDZPPN002318636/