@article{JRAM_1974__266_151422,
     author = {Charles J. Parry and Ezra Brwon},
     title = {The imaginary bicyclic biquadratic fields with class-number 1.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {118--120},
     year = {1974},
     volume = {266},
     zbl = {0287.12015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1974__266_151422/}
}