@article{EJDE_2002__2002__a250,
     author = {Do\v{s}l\'y, Ond\v{r}ej},
     title = {Constants in the oscillation theory of higher order {Sturm-Liouville} differential equations},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2002},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a250/}
}