@article{05231652,
title = {The distribution of nonprincipal eigenvalues of singular second-order linear ordinary differential equations.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2006},
year = {2006},
doi = {10.1155/IJMMS/2006/29895},
zbl = {1144.34392},
language = {en},
url = {http://dml.mathdoc.fr/item/05231652}
}
Pinasco, Juan Pablo. The distribution of nonprincipal eigenvalues of singular second-order linear ordinary differential equations.. International Journal of Mathematics and Mathematical Sciences, Tome 2006 (2006) . doi : 10.1155/IJMMS/2006/29895. http://gdmltest.u-ga.fr/item/05231652/