%0 Journal Article %A Daniel R. Replogle %A Robert G. Underwood %T Nontrivial tame extensions over Hopf orders %J Acta Arithmetica %D 2002 %P 67-84 %V 104 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa104-1-3/ %R 10.4064/aa104-1-3 %G en %F 10_4064_aa104_1_3