@article{1183511894,
author = {Freilich, Gerald},
title = {Note on the eigenvalues of the Sturm-Liouville differential equation},
journal = {Bull. Amer. Math. Soc.},
volume = {54},
number = {12},
year = {1948},
pages = { 405-408},
language = {en},
url = {http://dml.mathdoc.fr/item/1183511894}
}
Freilich, Gerald. Note on the eigenvalues of the Sturm-Liouville differential equation. Bull. Amer. Math. Soc., Tome 54 (1948) no. 12, pp. 405-408. http://gdmltest.u-ga.fr/item/1183511894/