@article{EJDE_2007__2007__a2,
     author = {Bastos,  Waldemar D. and Raposo,  Carlos A.},
     title = {Transmission problem for waves with frictional damping},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1136.35315},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a2/}
}