%0 Journal Article %A E. P. Aksent'eva %T On the solution of a nonlinear boundary value problem for a rectangle in the class $B_n$ %J Trudy seminara po kraevym zadačam %D 1990 %P 51-59 %V 25 %N 25 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1990_25_25_a3/ %G ru %F KUKZ_1990_25_25_a3