Guo, Victor J. W., and Dan-Mei Yang. “A $q$-Analogue of Some Binomial Coefficient Identities of Y. Sun”. The Electronic Journal of Combinatorics 18, no. 1 (March 31, 2011): P78. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v18i1p78.