@article{10_4153_CJM_1970_082_5,
     author = {Rider, Daniel},
     title = {Central {Idempotent} {Measures} on {Unitary} {Groups}},
     journal = {Canadian journal of mathematics},
     pages = {719--725},
     year = {1970},
     volume = {22},
     number = {4},
     doi = {10.4153/CJM-1970-082-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-082-5/}
}