@article{1077315230,
author = {Beals, Michael},
title = {Spreading of singularities for a semilinear wave equation},
journal = {Duke Math. J.},
volume = {49},
number = {1},
year = {1982},
pages = { 275-286},
language = {en},
url = {http://dml.mathdoc.fr/item/1077315230}
}
Beals, Michael. Spreading of singularities for a semilinear wave equation. Duke Math. J., Tome 49 (1982) no. 1, pp. 275-286. http://gdmltest.u-ga.fr/item/1077315230/