@article{02107532,
title = {Rearrangements of the coefficients of ordinary differential equations.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {5},
year = {2004},
zbl = {1053.34003},
language = {en},
url = {http://dml.mathdoc.fr/item/02107532}
}
Karaa, Samir. Rearrangements of the coefficients of ordinary differential equations.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 5 (2004) . http://gdmltest.u-ga.fr/item/02107532/