@article{10_21136_AM_1984_104105,
     author = {Layton, William J.},
     title = {An energy analysis of degenerate hyperbolic partial differential equations.},
     journal = {Applications of Mathematics},
     pages = {350--366},
     publisher = {mathdoc},
     volume = {29},
     number = {5},
     year = {1984},
     doi = {10.21136/AM.1984.104105},
     mrnumber = {0772270},
     zbl = {0564.65073},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1984.104105/}
}