%0 Journal Article %A M. I. Belishev %T Determination of distances to virtual source from dynamical boundary data %J Zapiski Nauchnykh Seminarov POMI %D 2011 %P 29-45 %V 393 %U http://geodesic.mathdoc.fr/item/ZNSL_2011_393_a3/ %G ru %F ZNSL_2011_393_a3