%0 Journal Article %A V. R. Barseghyan %T Problems of Boundary Control and Optimal Control of String Vibrations with Multipoint Intermediate Conditions on the State Functions %J Trudy Instituta matematiki i mehaniki %D 2022 %P 38-52 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2022_28_3_a3/ %G ru %F TIMM_2022_28_3_a3