@article{10_4153_CMB_1988_038_7,
     author = {Leep, David and Marshall, Murray},
     title = {Isomorphisms and {Automorphisms} of {Witt} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {250--256},
     year = {1988},
     volume = {31},
     number = {2},
     doi = {10.4153/CMB-1988-038-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-038-7/}
}