%0 Journal Article %A D. V. Tunitsky %T Multivalued solutions of hyperbolic Monge--Amp\`ere equations %J Differencialʹnye uravneniâ %D 1993 %P 2178-2189 %V 29 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_12_a15/ %G ru %F DE_1993_29_12_a15