@article{10_21136_CMJ_1988_102202,
     author = {Feireisl, Eduard},
     title = {On the existence of periodic solutions of a semilinear wave equation with a superlinear forcing term},
     journal = {Czechoslovak Mathematical Journal},
     pages = {78--87},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1988},
     doi = {10.21136/CMJ.1988.102202},
     mrnumber = {925942},
     zbl = {0665.35050},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102202/}
}