%0 Journal Article %A V. I. Evsin %T Some boundary value problems for Darboux's equation %J Differencialʹnye uravneniâ %D 1968 %P 16-33 %V 4 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_1_a1/ %G ru %F DE_1968_4_1_a1