@article{1250130309,
author = {Lovelady, David Lowell},
title = {Oscillation and even order linear di$\Theta$erential equations},
journal = {Rocky Mountain J. Math.},
volume = {6},
number = {4},
year = {1976},
pages = { 299-304},
language = {en},
url = {http://dml.mathdoc.fr/item/1250130309}
}
Lovelady, David Lowell. Oscillation and even order linear diΘerential equations. Rocky Mountain J. Math., Tome 6 (1976) no. 4, pp. 299-304. http://gdmltest.u-ga.fr/item/1250130309/