@article{TRSPY_2010_270_a16,
     author = {I. A. Rudakov},
     title = {On time-periodic solutions of a~quasilinear wave equation},
     journal = {Informatics and Automation},
     pages = {226--232},
     publisher = {mathdoc},
     volume = {270},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2010_270_a16/}
}