Tsiaras, Vassilis, Sofia Triantafilou, and Ioannis Tollis. “DAGmaps: Space Filling Visualization of Directed Acyclic Graphs”. Journal of Graph Algorithms and Applications 13, no. 3 (November 1, 2009): 319–347. Accessed September 28, 2024. https://jgaa.info/index.php/jgaa/article/view/paper190.