%0 Journal Article %A N. N. Popov %T Geometric ergodicity conditions for countable Markov chains %J Doklady Akademii Nauk %D 1977 %P 316-319 %V 234 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a14/ %G ru %F DAN_1977_234_2_a14