BASALAMAH, S.; WIDODO, E. Response Surface Model with Comparison of OLS Estimation and MM Estimation. Indonesian Journal of Statistics and Its Applications, Bogor, Indonesia, v. 5, n. 2, p. 273–283, 2021. DOI: 10.29244/ijsa.v5i2p273-283. Disponível em: https://journal-stats.ipb.ac.id/index.php/ijsa/article/view/817. Acesso em: 21 dec. 2025.