@article{RM_1963_18_3_a15,
     author = {Yu. L. Shmul'yan},
     title = {Operators with absolutely continuous spectrum},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1963_18_3_a15/}
}