@article{10_4064_cm101_2_9,
     author = {Thierry de la Rue},
     title = {An extension which is relatively twofold mixing but not
threefold mixing},
     journal = {Colloquium Mathematicum},
     pages = {271--277},
     publisher = {mathdoc},
     volume = {101},
     number = {2},
     year = {2004},
     doi = {10.4064/cm101-2-9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm101-2-9/}
}