%0 Journal Article %A %T Errata %J Acta Arithmetica %D 1990 %P 278-278 %V 56 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-56-3-278/ %R 10.4064/aa-56-3-278 %G fr %F 10_4064_aa_56_3_278