@article{10_4153_CMB_2000_008_0,
     author = {Farkas, Daniel R. and Linnell, Peter A.},
     title = {Trivial {Units} in {Group} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {60--62},
     year = {2000},
     volume = {43},
     number = {1},
     doi = {10.4153/CMB-2000-008-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2000-008-0/}
}