@inproceedings{masamichi1972the,
title={The structure of a von Neumann algebra with a homogeneous periodic state},
author={Masamichi Takesaki},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203229510073154},
booktitle={Acta Mathematica},
volume={131},
number={1},
pages={79-121},
year={1972},
}
Masamichi Takesaki. The structure of a von Neumann algebra with a homogeneous periodic state. 1972. Vol. 131. In Acta Mathematica. pp.79-121. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203229510073154.