Puangjumpa, Piyanut. 2023. β€œOn the Recursive Sequence $x_{n+1} = \frac{x_{n-2k-3}}{1 + \prod\limits_{m=1}^{k+1} x_{n-2m+1}}$: In Memoriam Professor Charles E. Chidume (1947–2021)”. Thai Journal of Mathematics 21 (3):529–536. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1524.