%0 Journal Article %A Keepler, M. %T On random evolutions induced by countable state space Markov chains %J Portugaliae mathematica %D 1978 %P 203-207 %V 37 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1978__37_3-4_115350/ %G en %F PORMA_1978__37_3-4_115350