%0 Journal Article %A M. M. Potapov %T Approximate solutions to Dirichlet control problems for the wave equation in Sobolev classes and dual observation problems %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 2006 %P 2191-2208 %V 46 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_12_a7/ %G ru %F ZVMMF_2006_46_12_a7