@article{ZVMMF_2006_46_6_a1,
     author = {M. Dana and Kh. D. Ikramov},
     title = {A~minimal residual method for linear polynomials in unitary matrices},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {975--982},
     publisher = {mathdoc},
     volume = {46},
     number = {6},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_6_a1/}
}