%0 Journal Article %A I. A. Kipriyanov %T A~variational problem in a~half space %J Informatics and Automation %D 1967 %P 19-26 %V 91 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1967_91_a2/ %G ru %F TRSPY_1967_91_a2