@article{AUM_2010_54_2_a3,
     author = {Wi\'snicki, Andrzej},
     title = {On a nonstandard approach to invariant measures for {Markov} operators},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2010_54_2_a3/}
}