Aditya Putra Pratama, and Yanuar Bhakti Wira Tama. “Prediksi Harga Komoditas Gas Alam Menggunakan Model Brownian Motion Dan Geometric Brownian Motion: Indonesia”. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika 6, no. 2 (June 14, 2023): 73–81. Accessed October 5, 2025. https://e-journal.my.id/proximal/article/view/2655.