%0 Journal Article %A S. P. Tsarev %T On Darboux-Integrable Nonlinear Partial Differential Equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1999 %P 389-399 %V 225 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1999_225_a25/ %G ru %F TM_1999_225_a25