%0 Journal Article %A V. R. Barseghyan %A S. V. Solodusha %A E. V. Markova %T Optimal boundary control of oscillations of a string with given intermediate values of the speed for minimizing boundary energy %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2025 %P 3-18 %V 240 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2025_240_a0/ %G ru %F INTO_2025_240_a0