@inproceedings{a.1974entropy,
title={Entropy for automorphisms of II_{1}von neumann algebras},
author={A. Connes, and E. Størmer},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203236346829189},
booktitle={Acta Mathematica},
volume={134},
number={1},
pages={289-306},
year={1974},
}
A. Connes, and E. Størmer. Entropy for automorphisms of II_{1}von neumann algebras. 1974. Vol. 134. In Acta Mathematica. pp.289-306. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203236346829189.