@inproceedings{richard1974mosaics,,
title={Mosaics, principal functions, and mean motion in von Neumann algebras},
author={Richard W. Carey, and Joel D. Pincus},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203242331726218},
booktitle={Acta Mathematica},
volume={138},
number={1},
pages={153-218},
year={1974},
}
Richard W. Carey, and Joel D. Pincus. Mosaics, principal functions, and mean motion in von Neumann algebras. 1974. Vol. 138. In Acta Mathematica. pp.153-218. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203242331726218.