@article{CMUC_1977__18_4_a16,
     author = {Fu\v{c}{\'\i}k, Svatopluk and Mawhin, Jean},
     title = {Generalized periodic solutions of nonlinear telegraph equations {(Preliminary} communication)},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {813--816},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1977},
     mrnumber = {0499777},
     zbl = {0376.35041},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1977__18_4_a16/}
}