@article{10_4153_CJM_1980_046_3,
     author = {Cliff, Gerald H.},
     title = {Zero {Divisors} and {Idempotents} in {Group} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {596--602},
     year = {1980},
     volume = {32},
     number = {3},
     doi = {10.4153/CJM-1980-046-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-046-3/}
}