%0 Journal Article %A A. P. Soldatov %T Dirichlet-type problems for the Lavrent'ev--Bitsadze equation. I.~Uniqueness theorems %J Doklady Akademii Nauk %D 1993 %P 696-698 %V 332 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_332_6_a5/ %G ru %F DAN_1993_332_6_a5