%0 Journal Article %A Kh. K. Ishkin %A A. V. Rezbayev %T On the Davies Formula for the Distribution of Eigenvalues of a Non-Self-Adjoint Differential Operator %J Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory %D 2018 %P 84-93 %V 153 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTO_2018_153_a5/ %G ru %F INTO_2018_153_a5