%0 Journal Article %A John Todd %T The Weierstrass Mean. I. The periods of ...(z|e1, e2, e3). %J Numerische Mathematik %D 1990 %P 737-746 %V 57 %N 6-7 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133478/ %F NUMA_1990__57_6-7_133478