MathSciNet bibliographic data MR1092598 (91m:11018) 11D25 (11J86) Steiner, Ray; Tzanakis, Nikos Simplifying the solution of Ljunggren's equation \$X\sp 2+1=2Y\sp 4\$$X\sp 2+1=2Y\sp 4$. J. Number Theory 37 (1991), no. 2, 123–132. Article

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