%0 Journal Article %A Gil', Michael I. %T Liapunov exponents for higher-order linear differential equations whose characteristic equations have variable real roots %J Electronic Journal of Differential Equations %D 2008 %V 2008 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a40/ %G en %F EJDE_2008__2008__a40