%0 Journal Article %A V. A. Sadovnichy %A V. V. Dubrovskii %T Some relations for the eigenvalues of discrete operators. Trace formulas for partial differential operators %J Differencialʹnye uravneniâ %D 1977 %P 2033-2042 %V 13 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_11_a13/ %G ru %F DE_1977_13_11_a13