%0 Journal Article %A W. Staś %A K. Wiertelak %T On some estimates in the theory of ζ(8,χ) - functions %J Acta Arithmetica %D 1974 %P 293-301 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-26-3-293-301/ %R 10.4064/aa-26-3-293-301 %G en %F 10_4064_aa_26_3_293_301