Nripes Kumar Mandal, Bikas Kumar Sinha, Manisha Pal. Understanding the Features of Non-Orthogonality in Quadratic Response Surface Designs. JISAS [Internet]. 2026 Jul. 24 [cited 2026 Jul. 26];79(2):87-94. Available from: https://epubs.icar.org.in/index.php/JISAS/article/view/181853