%0 Journal Article %A I. M. Krichever %T Analytic theory of difference equations with rational and elliptic coefficients and the Riemann--Hilbert problem %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2004 %P 1117-1154 %V 59 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2004_59_6_a6/ %G en %F RM_2004_59_6_a6