Yu, Pei, and Yusheng Li. “All Ramsey Numbers for Brooms in Graphs”. The Electronic Journal of Combinatorics 23, no. 3 (August 19, 2016): P3.29. Accessed April 3, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i3p29.