%0 Journal Article %A L. G. Mikhailov %T On a problem of conjugation of the solutions of a second-order partial differential equation on the plane %J Doklady Akademii Nauk %D 1981 %P 276-281 %V 256 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_256_2_a3/ %G ru %F DAN_1981_256_2_a3