%0 Journal Article %A I. A. Rudakov %T Periodic solutions of a~quasilinear wave equation with %J Sbornik. Mathematics %D 2007 %P 993-1009 %V 198 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2007_198_7_a4/ %G en %F SM_2007_198_7_a4