%0 Journal Article %A Yiannis Tsertos %T On the circle-exponent function %J Ευκλείδης Γ %D 1990 %P 137-147 %V 27 %I mathdoc %U http://geodesic.mathdoc.fr/item/EUG_1990__27_a12/ %G gr %F EUG_1990__27_a12