%0 Journal Article %A V. T. Shevaldin %T Some problems of extremal interpolation in the mean for linear differential operators %J Informatics and Automation %D 1983 %P 203-240 %V 164 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1983_164_a14/ %G ru %F TRSPY_1983_164_a14