%0 Journal Article %A Humio Ichimura %T Quadratic function fields whose class numbers are not divisible by three %J Acta Arithmetica %D 1999 %P 181-190 %V 91 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-91-2-181-190/ %R 10.4064/aa-91-2-181-190 %G en %F 10_4064_aa_91_2_181_190