%0 Journal Article %A M. G. Shur %T Ratio limit theorems for self-adjoint operators and symmetric Markov chains %J Teoriâ veroâtnostej i ee primeneniâ %D 2000 %P 268-288 %V 45 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_2000_45_2_a3/ %G ru %F TVP_2000_45_2_a3