Castelló, Rodolfo, Rym Mili, and Ioannis Tollis. “A Framework for the Static and Interactive Visualization of Statecharts”. Journal of Graph Algorithms and Applications 6, no. 3 (January 1, 2002): 313–351. Accessed December 22, 2024. https://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper56.