@article{10_4153_CMB_1989_059_2,
     author = {Hurrelbrink, Jurgen},
     title = {Annihilating {Polynomials} for {Group} {Rings} and {Witt} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {412--416},
     year = {1989},
     volume = {32},
     number = {4},
     doi = {10.4153/CMB-1989-059-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1989-059-2/}
}