%0 Journal Article %A L. Mordell %T The diophantine equation $dy^2 = ax^4 + bx^2 + c$ %J Acta Arithmetica %D 1968 %P 269-272 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-15-3-269-272/ %R 10.4064/aa-15-3-269-272 %G en %F 10_4064_aa_15_3_269_272