@article{10_4153_CJM_1990_021_9,
     author = {R\"ohl, Frank},
     title = {On {Automorphisms} of {Complete} {Algebras} {And} {The} {Isomorphism} {Problem} for {Modular} {Group} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {383--394},
     year = {1990},
     volume = {42},
     number = {3},
     doi = {10.4153/CJM-1990-021-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1990-021-9/}
}