@article{EJDE_1999__1999__a88,
     author = {Hawamdeh,  O. and Perjan,  A.},
     title = {Asymptotic expansions for linear symmetric hyperbolic systems with small parameter},
     journal = {Electronic journal of differential equations},
     year = {1999},
     volume = {1999},
     zbl = {0930.35099},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a88/}
}