@article{GDZPPN002185679,
title = {On algebraic number fields with even class numbers.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {247},
year = {1971},
pages = {118-122},
zbl = {0212.08004},
url = {http://dml.mathdoc.fr/item/GDZPPN002185679}
}
Ishida, Makoto. On algebraic number fields with even class numbers.. Journal für die reine und angewandte Mathematik, Tome 247 (1971) pp. 118-122. http://gdmltest.u-ga.fr/item/GDZPPN002185679/