@article{IVM_1971_3_a7,
     author = {I. I. Ogievetskii and A. I. Pidgaiko},
     title = {Two-dimensional normal matrices},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {55--60},
     publisher = {mathdoc},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_3_a7/}
}