%0 Journal Article %A Yu. N. Sudarev %T The asymptotic distribution of the eigenvalues of elliptic operators in $n$-dimensional space %J Differencialʹnye uravneniâ %D 1967 %P 1364-1374 %V 3 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1967_3_8_a16/ %G ru %F DE_1967_3_8_a16