@article{DAN_1991_317_1_a4,
     author = {V. A. Il'in},
     title = {Equiconvergence with a trigonometric series of expansions in root functions of the {Schr\"odinger} operator with an arbitrary summable complex-valued potential},
     journal = {Doklady Akademii Nauk},
     pages = {27--31},
     publisher = {mathdoc},
     volume = {317},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_317_1_a4/}
}