@article{bwmeta1.element.bwnjournal-article-aav28i3p273bwm, author = {Cohn, J.}, title = {The Diophantine equation $y^2 = Dx^4 + 1$, II}, journal = {Acta Arithmetica}, volume = {26}, year = {1975}, pages = {273-275}, zbl = {0321.10019}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav28i3p273bwm} }
Cohn, J. The Diophantine equation $y^2 = Dx^4 + 1$, II. Acta Arithmetica, Tome 26 (1975) pp. 273-275. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav28i3p273bwm/