@article{CMUC_1979__20_2_a10,
     author = {Klimperov\'a, Nina},
     title = {Periodic solutions to the inhomogeneous {sine-Gordon} equation},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {329--333},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1979},
     mrnumber = {539561},
     zbl = {0413.35009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979__20_2_a10/}
}