Zhu, Bao-Xuan, and Hua Sun. “Linear Transformations Preserving the Strong $q$-Log-Convexity of Polynomials”. The Electronic Journal of Combinatorics 22, no. 3 (August 28, 2015): #P3.26. Accessed May 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i3p26.