“Finding the Best Smoothing Coefficient for the Unary Exponential Smoothing Method Using the Nonlinear Programming Method”. Journal of the College of Basic Education 18, no. 74 (January 12, 2023): 657–667. Accessed April 21, 2025. https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9373.