Safro, Ilya, Dorit Ron, and Achi Brandt. “A Multilevel Algorithm for the Minimum 2-Sum Problem”. Journal of Graph Algorithms and Applications 10, no. 2 (January 1, 2006): 237–258. Accessed January 22, 2026. https://jgaa-v5.cs.brown.edu/index.php/jgaa/article/view/paper126.