@article{GDZPPN002444275,
title = {Asypmtotic formulas of eigenvalues and eigenfucntions on non-autonomous semilinear Sturm-Liouville problems.},
journal = {Mathematische Zeitschrift},
volume = {220},
year = {1995},
pages = {485-498},
zbl = {0827.34074},
url = {http://dml.mathdoc.fr/item/GDZPPN002444275}
}
Shibata, Tetsutaro. Asypmtotic formulas of eigenvalues and eigenfucntions on non-autonomous semilinear Sturm-Liouville problems.. Mathematische Zeitschrift, Tome 220 (1995) pp. 485-498. http://gdmltest.u-ga.fr/item/GDZPPN002444275/