%0 Journal Article %A B. S. Kruglikov %T Symplectic and Contact Lie Algebras with an Application to Monge--Amp\`ere Equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1998 %P 232-246 %V 221 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1998_221_a13/ %G ru %F TM_1998_221_a13