%0 Journal Article %T On a nonstandard approach to invariant measures for Markov operators %A Andrzej Wi nicki %J Annales UMCS, Mathematica %D 2010 %I %R 10.2478/v10062-010-0016-8 %X We show the existence of invariant measures for Markov-Feller operators defined on completely regular topological spaces which satisfy the classical positivity condition. %K Markov operator %K invariant measure %K nonstandard analysis %U http://versita.metapress.com/content/a4376n6666p384g6/?p=9103deacfc2242cb8d5ede9bf0cc3318&pi=7