@article{GDZPPN002192764,
title = {Class number formulae for imaginary quadratic fields.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {281},
year = {1976},
pages = {369-379},
zbl = {0335.12007},
url = {http://dml.mathdoc.fr/item/GDZPPN002192764}
}
Davis, R.W. Class number formulae for imaginary quadratic fields.. Journal für die reine und angewandte Mathematik, Tome 281 (1976) pp. 369-379. http://gdmltest.u-ga.fr/item/GDZPPN002192764/