The Use of Downton’s Estimator in Dual Response Surface Optimization. Jurnal Teknologi, [S. l.], v. 41, n. 1, p. 27–36, 2012. DOI: 10.11113/jt.v41.701. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/701.. Acesso em: 16 jul. 2024.