@article{1250129187,
author = {Avila, Geraldo S.S. and Costa, David G.},
title = {Decay of solutions of symmetric hyperbolic systems of partial differential equations},
journal = {Rocky Mountain J. Math.},
volume = {9},
number = {4},
year = {1979},
pages = { 405-414},
language = {en},
url = {http://dml.mathdoc.fr/item/1250129187}
}
Avila, Geraldo S.S.; Costa, David G. Decay of solutions of symmetric hyperbolic systems of partial differential equations. Rocky Mountain J. Math., Tome 9 (1979) no. 4, pp. 405-414. http://gdmltest.u-ga.fr/item/1250129187/