@article{DAN_1993_329_1_a1,
     author = {F. G. Maksudov and B. P. Allahverdiev},
     title = {Spectral analysis of nonselfadjoint operator functions with a},
     journal = {Doklady Akademii Nauk},
     pages = {9--11},
     publisher = {mathdoc},
     volume = {329},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_329_1_a1/}
}