@article{DAN_1987_296_4_a1,
     author = {V. D. Budaev},
     title = {The convergence of spectral expansions at the point of discontinuity of the coefficients of a linear nonselfadjoint differential operator of order $2m$},
     journal = {Doklady Akademii Nauk},
     pages = {780--784},
     publisher = {mathdoc},
     volume = {296},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_4_a1/}
}