@article{PM_2008_2008_1_a20,
     author = {Otway, T. H.},
     title = {Energy inequalities for a model of wave propagation in cold plasma.},
     journal = {Publicacions matem\`atiques},
     pages = {195-234},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_2008_2008_1_a20/}
}