@article{10_21136_CMJ_1988_102229,
     author = {Pt\'ak, Vlastimil and Vrbov\'a, Pavla},
     title = {Algebraic spectral subspaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {342--350},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {1988},
     doi = {10.21136/CMJ.1988.102229},
     mrnumber = {946303},
     zbl = {0667.47001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102229/}
}