%0 Journal Article %A S. A. Shchegolev %T On some classes of solutions of two-dimensional multifrequency quasilinear differential systems %J Differencialʹnye uravneniâ %D 2004 %P 1342-1347 %V 40 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2004_40_10_a6/ %G ru %F DE_2004_40_10_a6