Iskhakov, Albert, and Sergey Skovpen. “Exact Solution of a Linear Difference Equation in a Finite Number of Steps”. Journal of Progressive Research in Mathematics 13, no. 2 (March 22, 2018): 2259-2262. Accessed November 23, 2024. http://scitecresearch.com/journals/index.php/jprm/article/view/1459.