@article{01930015,
title = {Invariant manifold of hyperbolic-elliptic type for nonlinear wave equation.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2003},
year = {2003},
pages = {1111-1136},
doi = {10.1155/S0161171203207092},
zbl = {1017.37040},
language = {en},
url = {http://dml.mathdoc.fr/item/01930015}
}
Yuan, Xiaoping. Invariant manifold of hyperbolic-elliptic type for nonlinear wave equation.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 1111-1136. doi : 10.1155/S0161171203207092. http://gdmltest.u-ga.fr/item/01930015/