@article{MZM_1998_64_6_a7,
     author = {Kh. D. Ikramov and L. \'El'zner},
     title = {On matrices that admit unitary reduction to band form},
     journal = {Matemati\v{c}eskie zametki},
     pages = {871--880},
     publisher = {mathdoc},
     volume = {64},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_64_6_a7/}
}