%0 Journal Article %A Lotfi Riahi %T A $3G$-Theorem for Jordan Domains in ${\Bbb R}^2$ %J Colloquium Mathematicum %D 2004 %P 1-7 %V 101 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm101-1-1/ %R 10.4064/cm101-1-1 %G en %F 10_4064_cm101_1_1