Mendivelso, Juan, Rafael Niquefa, Yoan Pinzón, and Germán Hernández. “New Algorithms for δγ-Order Preserving Matching”. Ingeniería 23, no. 2 (May 31, 2018): 190–202. Accessed March 28, 2024. https://revistas.udistrital.edu.co/index.php/reving/article/view/13248.