@article{DAN_1987_292_3_a11,
     author = {S. R. Treil'},
     title = {Invertibility of a {Toeplitz} operator does not imply its},
     journal = {Doklady Akademii Nauk},
     pages = {563--567},
     publisher = {mathdoc},
     volume = {292},
     number = {3},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_292_3_a11/}
}