Chen, Xiaozheng, and Bo Ning. “Rainbow Triangles Sharing One Common Vertex or Edge”. The Electronic Journal of Combinatorics 32, no. 3 (August 22, 2025): #P3.30. Accessed May 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v32i3p30.