Guo, Victor J. W. “Proof of Two Divisibility Properties of Binomial Coefficients Conjectured by Z.-W. Sun”. The Electronic Journal of Combinatorics 21, no. 2 (June 27, 2014): P2.54. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i2p54.