%0 Journal Article
%A Yi Ouyang
%A Fei Xu
%T Riemann-Hurwitz formula in basic $ℤ_S$-extensions
%J Acta Arithmetica
%D 1997
%P 1-10
%V 81
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa-81-1-1-10/
%R 10.4064/aa-81-1-1-10
%G de
%F 10_4064_aa_81_1_1_10