Suhariman F, Prabowo A, Wardayani A. Determining The Optimal Portfolio Markowitz Model on Moving Stock Prices Using Brown Motion Geometry. Orics [Internet]. 2023 Sep. 5 [cited 2026 Feb. 7];4(3):87-92. Available from: https://iorajournal.org/index.php/Orics/article/view/253