Andi Susanto, Nofi Nurman, Syahlul Erbi Syaputra, B. W. “Farmers and Price Instability Risks: An Adaptation of the Black-Scholes Model in the Agricultural Insurance Premium Mathematics Formulation”. International Journal of Intelligent Systems and Applications in Engineering, vol. 12, no. 3, Mar. 2024, pp. 2689-97, https://ijisae.org/index.php/IJISAE/article/view/5743.