@article{05629317,
title = {Sturm-Picone comparison theorem of second-order linear equations on time scales.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2009},
year = {2009},
doi = {10.1155/2009/496135},
zbl = {1181.34109},
language = {en},
url = {http://dml.mathdoc.fr/item/05629317}
}
Zhang, Chao; Sun, Shurong. Sturm-Picone comparison theorem of second-order linear equations on time scales.. Advances in Difference Equations [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/496135. http://gdmltest.u-ga.fr/item/05629317/