KHAIRANI, Nerli; ELFITRA, Elfitra; SIREGAR, Tiur Malasari. Building an E-Learning System Calculating Pension Funds Using the Cox Ingersoll Ross Interest Rate Model. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 11, n. 2, p. 742–751, 2025. DOI: 10.29303/jppipa.v11i2.10198. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/10198. Acesso em: 8 dec. 2025.