B. Ahmadi and H. Doostie, “Fibonacci lengths of all finite $p$-groups of exponent $p^2$”, Ukr. Mat. Zhurn., vol. 65, no. 5, pp. 603–610, May 2013, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2444