%0 Journal Article %A A. Yu. Kolesov %A N. Kh. Rozov %T Impact of quadratic non-linearity on the~dynamics %J Sbornik. Mathematics %D 2002 %P 93-118 %V 193 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2002_193_1_a3/ %G en %F SM_2002_193_1_a3