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@article{MS2_1987__61_2_186100, author = {Dale Clarke Hernquist}, title = {Smoothly symmetrizable hyperbolic systems of partial differential equations.}, journal = {Mathematica Scandinavica}, pages = {262--275}, publisher = {mathdoc}, volume = {61}, number = {2}, year = {1987}, zbl = {0656.35080}, url = {http://geodesic.mathdoc.fr/item/MS2_1987__61_2_186100/} }
Dale Clarke Hernquist. Smoothly symmetrizable hyperbolic systems of partial differential equations.. Mathematica Scandinavica, Tome 61 (1987) no. 2, pp. 262-275. http://geodesic.mathdoc.fr/item/MS2_1987__61_2_186100/