%0 Journal Article %A K. Kh. Boimatov %A A. G. Kostyuchenko %T The effect of lowest coefficients of an elliptic differential operator on the spectral function %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1986 %P 15-23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1986_2_a3/ %G ru %F VMUMM_1986_2_a3