@article{ZVMMF_2007_47_9_a1,
     author = {Kh. D. Ikramov},
     title = {On special solutions to the matrix equations $X\bar X=I$ {\cyri} $X\bar X=-I$},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1460--1466},
     year = {2007},
     volume = {47},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2007_47_9_a1/}
}