%0 Journal Article %A N. A. Manakova %T On a hyposithis of G.\,A.~Sviridyuk %J The Bulletin of Irkutsk State University. Series Mathematics %D 2011 %P 87-93 %V 4 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IIGUM_2011_4_4_a8/ %G ru %F IIGUM_2011_4_4_a8