Elabbasy, E. M., H. El-Metwally, and E. Elsayed. “On the Difference Equation ${ x_{n+1}=\frac{ax_{n}^{2}+bx_{n-1}x_{n-k}}{cx_{n}^{2}+dx_{n-1}x_{n-k}}}$”. Sarajevo Journal of Mathematics, vol. 4, no. 2, June 2024, pp. 239-48, doi:10.5644/SJM.04.2.09.