%0 Journal Article %A M. E. Lerner %T On the formulation and solvability of a class of boundary value problems for the Lavrent'ev--Bitsadze equation %J Doklady Akademii Nauk %D 1991 %P 561-565 %V 317 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_317_3_a10/ %G ru %F DAN_1991_317_3_a10