@article{DE_2005_41_11_a7,
     author = {A. V. Kraev and A. S. Fursov},
     title = {Lower and {Upper} {Bounds} of the {Instability} {Radii} for {Families} of {Polynomials} with a {Fixed} {Subset} of {Coefficients}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1510--1516},
     publisher = {mathdoc},
     volume = {41},
     number = {11},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2005_41_11_a7/}
}