@article{10_4153_S0008439519000638,
     author = {Murugan, S. P. and Sundar, S.},
     title = {Measurable and {Continuous} {Units} of an $E_{0}$-semigroup},
     journal = {Canadian mathematical bulletin},
     pages = {469--478},
     year = {2020},
     volume = {63},
     number = {2},
     doi = {10.4153/S0008439519000638},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439519000638/}
}