@article{10_4153_CJM_1993_022_2,
     author = {Zhang, Qing},
     title = {Conditional {Sequence} {Entropy} and {Mild} {Mixing} {Extensions}},
     journal = {Canadian journal of mathematics},
     pages = {429--448},
     year = {1993},
     volume = {45},
     number = {2},
     doi = {10.4153/CJM-1993-022-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-022-2/}
}