@article{10_4153_CMB_2017_005_3,
     author = {Lee, Tsiu-Kwen},
     title = {Ad-nilpotent {Elements} of {Semiprime} {Rings} with {Involution}},
     journal = {Canadian mathematical bulletin},
     pages = {318--327},
     year = {2018},
     volume = {61},
     number = {2},
     doi = {10.4153/CMB-2017-005-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-005-3/}
}