Sri Zulfa, F. and Agustina, D. (2024) “Variance and Semi-Variance with a Multi-Objective Approach Using the Spiral Optimization Method”, Mathematical Journal of Modelling and Forecasting, 2(2), pp. 46–57. Available at: https://mjomaf.ppj.unp.ac.id/index.php/mjmf/article/view/30 (Accessed: 15 January 2025).