Levitin, Lev, Mark Karpovsky, Mehmet Mustafa, and Lev Zakrevski. “A New Algorithm for Finding Minimal Cycle-Breaking Sets of Turns in a Graph”. Journal of Graph Algorithms and Applications 10, no. 2 (January 1, 2006): 387–420. Accessed December 21, 2024. https://jgaa.info/index.php/jgaa/article/view/paper134.