@article{10_4153_CJM_1982_070_x,
     author = {Williams, Kenneth S. and Currie, James D.},
     title = {Class {Numbers} and {Biquadratic} {Reciprocity}},
     journal = {Canadian journal of mathematics},
     pages = {969--988},
     year = {1982},
     volume = {34},
     number = {4},
     doi = {10.4153/CJM-1982-070-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-070-x/}
}