Gold Price Fluctuation Forecasting Based on Newton and Lagrange Polynomial Interpolation. Jurnal Varian, [S. l.], v. 7, n. 1, p. 87–98, 2023. DOI: 10.30812/varian.v7i1.3230. Disponível em: https://journal.universitasbumigora.ac.id/Varian/article/view/3230. Acesso em: 19 oct. 2025.