%0 Journal Article %A W. Ljunggren %T On the Diophantine Equation Cx2 + D = 2yn. %J Mathematica Scandinavica %D 1966 %P 69-86 %V 18 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1966__18_165942/ %F MS2_1966__18_165942