Bugeaud, Yann, and Preda Mihailescu. “On the Nagell-Ljunggren Equation $(x^n - 1) (x - 1) = y^q$”. MATHEMATICA SCANDINAVICA 101, no. 2 (December 1, 2007): 177–183. Accessed February 4, 2026. https://www.mscand.dk/article/view/15038.