@article{05836308,
title = {Hyperbolic systems equivalent to the wave equation.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {50},
year = {2009},
pages = {19-27},
zbl = {1224.35245},
language = {en},
url = {http://dml.mathdoc.fr/item/05836308}
}
Gordienko, V.M. Hyperbolic systems equivalent to the wave equation.. Sibirskij Matematicheskij Zhurnal, Tome 50 (2009) pp. 19-27. http://gdmltest.u-ga.fr/item/05836308/