San Cristóbal Mateo, José Ramón, Emma Diaz Ruiz de Navamuel, and María Antonia González Villa. “Are Project Managers Ready for the 21th Challenges? A Review of Problem Structuring Methods for Decision Support”. International Journal of Information Systems and Project Management 5, no. 2 (February 1, 2022): 43–56. Accessed April 20, 2024. https://revistas.uminho.pt/index.php/ijispm/article/view/3850.