@article{JRAM_1972__253_151214,
     author = {Ezra Brown},
     title = {Quadratic forms and biquadratic reciprocity.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {214--220},
     publisher = {mathdoc},
     volume = {253},
     year = {1972},
     zbl = {0229.10002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__253_151214/}
}