@article{EJDE_2008__2008__a40,
     author = {Gil',  Michael I.},
     title = {Liapunov exponents for higher-order linear differential equations whose characteristic equations have variable real roots},
     journal = {Electronic journal of differential equations},
     year = {2008},
     volume = {2008},
     zbl = {1170.34340},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a40/}
}