@article{IM2_1977_11_3_a6,
     author = {Yu. I. Lyubarskii},
     title = {On the convolution operator on a~finite interval},
     journal = {Izvestiya. Mathematics },
     pages = {583--611},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1977},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1977_11_3_a6/}
}