%0 Journal Article %A Yu. V. Gandel' %T Boundary-value problems for the Helmholtz equation and their discrete mathematical models %J Contemporary Mathematics. Fundamental Directions %D 2010 %P 36-49 %V 36 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2010_36_a3/ %G ru %F CMFD_2010_36_a3