%0 Journal Article %A Toru Komatsu %T A family of infinite pairs of quadratic fields ${\Bbb Q} (\sqrt{D})$ and ${\Bbb Q} (\sqrt{-D})$ whose class numbers are both divisible by 3 %J Acta Arithmetica %D 2000 %P 213-221 %V 96 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa96-3-2/ %R 10.4064/aa96-3-2 %G en %F 10_4064_aa96_3_2