Grigoriev, Alexander, Steven Kelk, and Nela Lekić. “On Low Treewidth Graphs and Supertrees”. Journal of Graph Algorithms and Applications 19, no. 1 (January 1, 2015): 325–343. Accessed December 7, 2025. https://jgaa-v5.cs.brown.edu/index.php/jgaa/article/view/paper361.