@article{MZM_1968_3_3_a7,
     author = {K. S. Sibirskii},
     title = {A~minimal polynomial basis of unitary invariants of a~square matrix of the third order},
     journal = {Matemati\v{c}eskie zametki},
     pages = {291--295},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1968_3_3_a7/}
}