%0 Journal Article %A E. N. Pavlovsky %T Complexity of Index Sets for Several Classes of Models %J Sibirskij žurnal čistoj i prikladnoj matematiki %D 2008 %P 71-76 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VNGU_2008_8_1_a6/ %G ru %F VNGU_2008_8_1_a6