@article{GDZPPN002346443,
title = {On the Asymptotic Distribution of Eigenvalues of Certain One-Dimensional Sturm-Liouville Operators.},
journal = {Mathematica Scandinavica},
volume = {9},
year = {1961},
pages = {69-79},
zbl = {0102.30201},
url = {http://dml.mathdoc.fr/item/GDZPPN002346443}
}
Lanke, Jan. On the Asymptotic Distribution of Eigenvalues of Certain One-Dimensional Sturm-Liouville Operators.. Mathematica Scandinavica, Tome 9 (1961) pp. 69-79. http://gdmltest.u-ga.fr/item/GDZPPN002346443/