Hertz, Alain, Odile Marcotte, and David Schindl. “On the Maximum Orders of an Induced Forest, an Induced Tree, and a Stable Set”. Yugoslav Journal of Operations Research 24, no. 2 (June 1, 2014): 199–215. Accessed July 28, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/391.