@article{10_4153_CMB_1973_090_5,
     author = {Parmenter, M. and Sehgal, S.},
     title = {Uniqueness of the {Coefficient} {Ring} in {Some} {Group} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {551--555},
     year = {1973},
     volume = {16},
     number = {4},
     doi = {10.4153/CMB-1973-090-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-090-5/}
}