%0 Journal Article %A David Cox %A Ron Donagi %T On the Failure of Variational Torelli for Regular Elliptic Surfaces with a Section. %J Mathematische Annalen %D 1985 %P 673-684 %V 273 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1985__273_164080/ %F MAN_1985__273_164080