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@article{MS2_1966__18_165942, author = {W. Ljunggren}, title = {On the {Diophantine} {Equation} {Cx2} + {D} = 2yn.}, journal = {Mathematica Scandinavica}, pages = {69--86}, publisher = {mathdoc}, volume = {18}, year = {1966}, zbl = {0223.10007}, url = {http://geodesic.mathdoc.fr/item/MS2_1966__18_165942/} }
W. Ljunggren. On the Diophantine Equation Cx2 + D = 2yn.. Mathematica Scandinavica, Tome 18 (1966), pp. 69-86. http://geodesic.mathdoc.fr/item/MS2_1966__18_165942/