Alsudani, Mohammed A. R., and Hanan Ali Chachan. “Expected and Variance for a Single Machine Issue With Linear Decreasing Processing Time Deterioration”. Iraqi Journal of Science 67, no. 2 (February 28, 2026): 1011–1025. Accessed July 10, 2026. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/13937.