Hajebi, Sepehr, and Sophie Spirkl. “Suns in Triangle-Free Graphs of Large Chromatic Number”. The Electronic Journal of Combinatorics 33, no. 1 (March 27, 2026): P1.55. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v33i1p55.