@article{DAN_1968_178_3_a12,
     author = {V. Ya. Stetsenko},
     title = {Spectral properties of irreducible operators},
     journal = {Doklady Akademii Nauk},
     pages = {552--554},
     publisher = {mathdoc},
     volume = {178},
     number = {3},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_3_a12/}
}