@article{10_4153_CMB_1987_005_6,
     author = {Hoechsmann, K. and Sehgal, S.K.},
     title = {Integral {Group} {Rings} {Without} {Proper} {Units}},
     journal = {Canadian mathematical bulletin},
     pages = {36--42},
     year = {1987},
     volume = {30},
     number = {1},
     doi = {10.4153/CMB-1987-005-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1987-005-6/}
}