@article{JRAM_1977__295_151918,
     author = {Ezra Brown and Charles J. Parry},
     title = {The 2-class group of certain biquadratic number fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {61--71},
     publisher = {mathdoc},
     volume = {295},
     year = {1977},
     zbl = {0355.12007},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1977__295_151918/}
}