Kamčev, Nina, and Christoph Spiegel. “Another Note on Intervals in the Hales–Jewett Theorem”. The Electronic Journal of Combinatorics 29, no. 1 (March 25, 2022): P1.62. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v29i1p62.