“Finding the Optimal Preventive Maintenance Time for the Second South Baghdad Gas Electricity Distribution Station Using Reliability Function Techniques”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 56, no. 1 (January 5, 2025): 166–170. Accessed August 11, 2026. https://jrucs.iq/index.php/JAUCS/article/view/691.