@article{GDZPPN001172409,
title = {High Order Approximations to Sturm-Liouville Eigenvalues.},
journal = {Numerische Mathematik},
volume = {25},
year = {1975},
pages = {241-248},
zbl = {0298.65058},
url = {http://dml.mathdoc.fr/item/GDZPPN001172409}
}
Pruess, S. High Order Approximations to Sturm-Liouville Eigenvalues.. Numerische Mathematik, Tome 25 (1975) pp. 241-248. http://gdmltest.u-ga.fr/item/GDZPPN001172409/