%0 Journal Article %A V. P. Mikhailov %T The first boundary value problem for certain semi bounded operators %J Doklady Akademii Nauk %D 1963 %P 282-285 %V 151 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_151_2_a10/ %G ru %F DAN_1963_151_2_a10