Li, Zhentao, Manikandan Narayanan, and Adrian Vetta. “The Complexity of the Simultaneous Cluster Problem”. Journal of Graph Algorithms and Applications 18, no. 1 (January 1, 2014): 1–34. Accessed December 6, 2025. https://jgaa-v5.cs.brown.edu/index.php/jgaa/article/view/paper313.