Ugbe, T. ., Edet Bassey, Richmond Ofonodo, & Uduakobong Umondak. (2022). Construction of Alternative Axial Points Using Standard Axial Points of Central Composite Design. American Scientific Research Journal for Engineering, Technology, and Sciences, 86(1), 104–130. Retrieved from https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/7144