Angibaud, Sébastien, Guillaume Fertin, Irena Rusu, Annelyse Thévenin, and Stéphane Vialette. “On the Approximability of Comparing Genomes With Duplicates”. Journal of Graph Algorithms and Applications 13, no. 1 (February 1, 2009): 19–53. Accessed January 7, 2025. https://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper175.