%0 Journal Article %A Jan Stienstra %A Frits Beukers %T On the Picard-Fuchs Equation and the Formal Brauer Group of Certain Elliptic K3-Surfaces. %J Mathematische Annalen %D 1985 %P 269-304 %V 271 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1985__271_163967/ %F MAN_1985__271_163967