Zidane, Youcef J-T., Agnar Johansen, Bassam A. Hussein, and Bjørn Andersen. “PESTOL - Framework for «Project Evaluation on Strategic, Tactical and Operational Levels»”. International Journal of Information Systems and Project Management 4, no. 3 (February 2, 2022): 25–41. Accessed May 20, 2024. https://revistas.uminho.pt/index.php/ijispm/article/view/3867.