%0 Journal Article %A G. A. Suvorčenkova %T Asymptotic behavior of a~spectral function of a~first-order differential equation with operator coefficients %J Trudy Moskovskogo matematičeskogo obŝestva %D 1980 %P 145-161 %V 41 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1980_41_a5/ %G ru %F MMO_1980_41_a5