@article{10_2307_121130,
     author = {Daniel J. Rudolph and Benjamin Weiss},
     title = {Entropy and mixing for amenable group actions},
     journal = {Annals of mathematics},
     year = {2000},
     volume = {151},
     number = {3},
     doi = {10.2307/121130},
     zbl = {0957.37003},
     url = {http://geodesic.mathdoc.fr/articles/10.2307/121130/}
}