%0 Journal Article %T On the Constant in the Pólya-Vinogradov Inequality %J Canadian mathematical bulletin %D 1988 %P 347-352 %V 31 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-050-1/ %R 10.4153/CMB-1988-050-1 %F 10_4153_CMB_1988_050_1