@article{GDZPPN002183323,
title = {On Real Quadratic Fields whose Class Numbers are Multiples of 3.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {229},
year = {1968},
pages = {101-102},
zbl = {0165.06501},
url = {http://dml.mathdoc.fr/item/GDZPPN002183323}
}
Honda, Taira. On Real Quadratic Fields whose Class Numbers are Multiples of 3.. Journal für die reine und angewandte Mathematik, Tome 229 (1968) pp. 101-102. http://gdmltest.u-ga.fr/item/GDZPPN002183323/