@article{GDZPPN001174096,
title = {Error Bounds and Estimates for Eigenvalues of Integral Equations.},
journal = {Numerische Mathematik},
volume = {28},
year = {1977},
pages = {133-148},
zbl = {0358.65109},
url = {http://dml.mathdoc.fr/item/GDZPPN001174096}
}
Spence, A. Error Bounds and Estimates for Eigenvalues of Integral Equations.. Numerische Mathematik, Tome 28 (1977) pp. 133-148. http://gdmltest.u-ga.fr/item/GDZPPN001174096/