Campbell, Rutger, J. Pascal Gollin, Kevin Hendrey, Thomas Lesgourgues, Bojan Mohar, Youri Tamitegama, Jane Tan, and David R. Wood. “Clustered Colouring of Graph Products”. The Electronic Journal of Combinatorics 32, no. 3 (July 18, 2025): P3.15. Accessed March 30, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v32i3p15.