Foucaud, Florent, and Ralf Klasing. “Parameterized and Approximation Complexity of the Detection Pair Problem in Graphs”. Journal of Graph Algorithms and Applications 21, no. 6 (October 1, 2017): 1039–1056. Accessed June 30, 2024. https://jgaa.info/index.php/jgaa/article/view/paper449.