%0 Journal Article %A K. S. Khalina %T Controllability problems for the non-homogeneous string that is fixed at the right-end point with Dirichlet boundary control at the left point %J Žurnal matematičeskoj fiziki, analiza, geometrii %D 2011 %P 34-58 %V 7 %N 1 %U http://geodesic.mathdoc.fr/item/JMAG_2011_7_1_a2/ %G en %F JMAG_2011_7_1_a2