@article{1102995584,
author = {Port, Sidney C.},
title = {Ratio limit theorems for Markov chains.},
journal = {Pacific J. Math.},
volume = {15},
number = {4},
year = {1965},
pages = { 989-1017},
language = {en},
url = {http://dml.mathdoc.fr/item/1102995584}
}
Port, Sidney C. Ratio limit theorems for Markov chains.. Pacific J. Math., Tome 15 (1965) no. 4, pp. 989-1017. http://gdmltest.u-ga.fr/item/1102995584/