MathSciNet bibliographic data MR1980642 11G30 (11D41) Siksek, Samir; Cremona, John E. On the Diophantine equation \$x\sp 2+7=y\sp m\$$x\sp 2+7=y\sp m$. Acta Arith. 109 (2003), no. 2, 143–149. Article

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