%0 Journal Article %A E. F. Zhizhenkova %A G. M. Zhislin %T On the existence of a minimum of certain quadratic functionals in an unbounded region %J Trudy Moskovskogo matematičeskogo obŝestva %D 1960 %P 121-128 %V 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1960_9_a3/ %G ru %F MMO_1960_9_a3