@article{10_4153_CMB_1990_038_8,
     author = {Goodaire, E. G. and Jespers, E. and Parmenter, M. M.},
     title = {Determining {Units} in {Some} {Integral} {Group} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {242--246},
     year = {1990},
     volume = {33},
     number = {2},
     doi = {10.4153/CMB-1990-038-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-038-8/}
}