@article{10_4064_aa_28_3_273_275,
     author = {J. Cohn},
     title = {The {Diophantine} equation $y^2 = Dx^4 + 1$, {II}},
     journal = {Acta Arithmetica},
     pages = {273--275},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {1975},
     doi = {10.4064/aa-28-3-273-275},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-28-3-273-275/}
}