Pramujati, Windya Harieska. “Determination of Farming Business Insurance Premium Prices With the Variance Premium Principle and Standard Deviation Premium Principle Methods”. Operations Research: International Conference Series 2, no. 4 (December 4, 2021): 83–88. Accessed January 14, 2026. https://www.iorajournal.org/index.php/Orics/article/view/180.