Jasim Al –Jawar, Naseif, and Dyaina hilaS Al–Anbagi. “Semigroup Theory for Dual Dynamic Programming”. Iraqi Journal of Science 56, no. 2B (April 30, 2023): 1471–1488. Accessed December 7, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/10157.