@inproceedings{takayuki1980a,
title={A Hilbert-Schmidt norm inequality associated with the Fuglede-Putnam theorem},
author={Takayuki Furuta},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203512958375372},
booktitle={Arkiv for Matematik},
volume={20},
number={1},
pages={157-163},
year={1980},
}
Takayuki Furuta. A Hilbert-Schmidt norm inequality associated with the Fuglede-Putnam theorem. 1980. Vol. 20. In Arkiv for Matematik. pp.157-163. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203512958375372.