@inproceedings{masamichi1967covariant,
title={Covariant representations of$C$^{*}-algebras and their locally compact automorphism groups},
author={Masamichi Takesaki},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203213805542048},
booktitle={Acta Mathematica},
volume={119},
number={1},
pages={273-303},
year={1967},
}
Masamichi Takesaki. Covariant representations of$C$^{*}-algebras and their locally compact automorphism groups. 1967. Vol. 119. In Acta Mathematica. pp.273-303. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203213805542048.