Sastro, Wahyudi. “Analisis Lanjut Metode Beda Hingga Eksplisit Untuk Menentukan Harga Opsi”. UJMC (Unisda Journal of Mathematics and Computer Science) 5, no. 01 (June 13, 2019): 41–46. Accessed June 4, 2026. https://ejournal.unisda.ac.id/index.php/ujmc/article/view/1302.