SHAYMAA RIYADH THANOON. APPLICATION TREND SURFACE MODELS WITH ESTIMATION. Tikrit Journal of Pure Science, [S. l.], v. 23, n. 10, p. 118–121, 2019. DOI: 10.25130/tjps.v23i10.574. Disponível em: https://www.tjpsj.org/index.php/tjps/article/view/574. Acesso em: 20 dec. 2025.