Chomtee B. Comparison of Five Design Variables of Response Surface Designs in a Spherical Region Over a Set of Reduced Models . Agr. Nat. Resour. [internet]. 2015 Apr. 30 [cited 2026 Aug. 27];49(2):305-12. available from: https://li01.tci-thaijo.org/index.php/anres/article/view/243573