00305nam a2200121Ia 4500082002000000100001800020245004100038260003300079300001400112490004700126500000500173700000500178  a515.42bF656.ET  aFoguel, S. R.  aErgodic theory of markov processesb  aNew YorkbVan Nostrandc1969  avi, 102p.  aVan Nostrand Mathematical studiesv no. 21  a  a