@article{01373506,
title = {A non-local problem with integral conditions for hyperbolic equations.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {1999},
year = {1999},
zbl = {0935.35027},
language = {en},
url = {http://dml.mathdoc.fr/item/01373506}
}
Pulkina, L.S. A non-local problem with integral conditions for hyperbolic equations.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 1999 (1999) . http://gdmltest.u-ga.fr/item/01373506/