@article{10_4153_CJM_2010_054_1,
     author = {Buckingham, Paul and Snaith, Victor},
     title = {Functoriality of the {Canonical} {Fractional} {Galois} {Ideal}},
     journal = {Canadian journal of mathematics},
     pages = {1011--1036},
     year = {2010},
     volume = {62},
     number = {5},
     doi = {10.4153/CJM-2010-054-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-054-1/}
}