%0 Journal Article %A V. K. Dzyadyk %A L. A. Ostrovetskii %T A~polynomial approximation method for the solution of a~boundary value problem and its derivatives for linear ordinary differential equations %J Izvestiya. Mathematics %D 1989 %P 391-402 %V 33 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a8/ %G en %F IM2_1989_33_2_a8