@article{10_4153_CJM_2009_051_3,
     author = {Griffiths, Ross and Lescop, Mika\"el},
     title = {On the {2-Rank} of the {Hilbert} {Kernel} of {Number} {Fields}},
     journal = {Canadian journal of mathematics},
     pages = {1073--1091},
     year = {2009},
     volume = {61},
     number = {5},
     doi = {10.4153/CJM-2009-051-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-051-3/}
}