@article{FPM_2006_12_5_a14,
     author = {I. A. Rudakov},
     title = {Periodic solutions of a~quasilinear wave equation with homogeneous boundary conditions},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {189--201},
     publisher = {mathdoc},
     volume = {12},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2006_12_5_a14/}
}