%0 Journal Article %A G. M. Vainikko %T The convergence of the difference method in the problem of periodic solutions of ordinary differential equations %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1975 %P 87-100 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1975_15_1_a8/ %G ru %F ZVMMF_1975_15_1_a8