| Title | Multiplicity of periodic solutions of nonlinear wave equations |
| Publication Type | Journal Article |
| Year of Publication | 2004 |
| Authors | Berti, M, Bolle, P |
| Journal | Nonlinear Anal. |
| Volume | 56 |
| Pagination | 1011–1046 |
| ISSN | 0362-546X,1873-5215 |
| URL | https://doi.org/10.1016/j.na.2003.11.001 |
| DOI | 10.1016/j.na.2003.11.001 |