%0 Journal Article %A A. Yu. Kolesov %T Relaxation cycles of a nonlinear wave equation that smoothly %J Doklady Akademii Nauk %D 1995 %P 158-160 %V 341 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1995_341_2_a2/ %G ru %F DAN_1995_341_2_a2