Benkert, Marc, Herman Haverkort, Moritz Kroll, and Martin Nöllenburg. “Algorithms for Multi-Criteria Boundary Labeling”. Journal of Graph Algorithms and Applications 13, no. 3 (November 1, 2009): 289–317. Accessed June 26, 2024. https://jgaa.info/index.php/jgaa/article/view/paper189.