%0 Journal Article %A Shoichi Hirose %T The diophantine equation (x2 - 1) (y2 - 1) = (z2 - 1)2: a footnote. %J Elemente der Mathematik %D 1987 %P 109-109 %V 42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELMA_1987__42_4_141409/ %F ELMA_1987__42_4_141409