@article{1077475900,
author = {Leighton, Walter},
title = {The detection of the oscillation of solutions of a second
order linear differential equation},
journal = {Duke Math. J.},
volume = {17},
number = {1},
year = {1950},
pages = { 57-62},
language = {en},
url = {http://dml.mathdoc.fr/item/1077475900}
}
Leighton, Walter. The detection of the oscillation of solutions of a second
order linear differential equation. Duke Math. J., Tome 17 (1950) no. 1, pp. 57-62. http://gdmltest.u-ga.fr/item/1077475900/