%0 Journal Article %A A. I. Aptekarev %T Asymptotic properties of polynomials orthogonal on a~system of contours, and periodic motions of Toda lattices %J Sbornik. Mathematics %D 1986 %P 233-260 %V 53 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1986_53_1_a11/ %G en %F SM_1986_53_1_a11