@article{10_21136_CPM_1977_117952,
     author = {\v{S}t\v{e}dr\'y, Milan},
     title = {Periodic solutions of a weakly nonlinear wave equation},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {128--143},
     publisher = {mathdoc},
     volume = {102},
     number = {2},
     year = {1977},
     doi = {10.21136/CPM.1977.117952},
     mrnumber = {0460847},
     zbl = {0355.35050},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1977.117952/}
}