@article{10_21136_CPM_1973_117812,
     author = {Pe\v{s}l, Ji\v{r}{\'\i}},
     title = {Periodic solutions of a weakly nonlinear wave equation in one dimension},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {333--356},
     publisher = {mathdoc},
     volume = {098},
     number = {4},
     year = {1973},
     doi = {10.21136/CPM.1973.117812},
     mrnumber = {0350208},
     zbl = {0274.35043},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1973.117812/}
}