%0 Journal Article %A V. T. Kharin %T An approximate method of solving boundary-value problems for linear equations with analytic coefficients %J Doklady Akademii Nauk %D 1964 %P 1044-1047 %V 158 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a10/ %G ru %F DAN_1964_158_5_a10