« Reliability Evaluation and Optimization of Solar Based Ammonia Urea Production System: A Study on Lethal and Nonlethal Failures with Coverage Factor Considerations » (2025) Nigerian Journal of Operations Research, 3(1), p. 20–41. Disponible à: https://nijor.org.ng/index.php/nijor/article/view/4 (Consulté le: 15 juin 2026).