%0 Journal Article %A O. Costin %A M. Kruskal %T Movable Singularities of Solutions of Difference Equations in Relation to Solvability and a~Study of a~Superstable Fixed Point %J Teoretičeskaâ i matematičeskaâ fizika %D 2002 %P 160-169 %V 133 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2002_133_2_a2/ %G ru %F TMF_2002_133_2_a2