@article{ZVMMF_1971_11_6_a15,
     author = {Kh. D. Ikramov},
     title = {The eigenvalues of principal submatrices of a normal matrix},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1553--1557},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1971_11_6_a15/}
}