%0 Journal Article %A V. A. Il'in %A E. I. Moiseev %T Optimization of the boundary control of string vibrations by an elastic force on an arbitrary sufficiently large time interval %J Differencialʹnye uravneniâ %D 2006 %P 1699-1711 %V 42 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2006_42_12_a11/ %G ru %F DE_2006_42_12_a11