%0 Journal Article %A V. D. Budaev %T The convergence of spectral expansions at the point of discontinuity of the coefficients of a linear nonselfadjoint differential operator of order $2m$ %J Doklady Akademii Nauk %D 1987 %P 780-784 %V 296 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_296_4_a1/ %G ru %F DAN_1987_296_4_a1