Dauran N. S. and Danbaba A. “An Improved Method for Generating Factorial Effects and Their Treatment Combinations in a Full Symmetric Factorial Designs”. NIPES - Journal of Science and Technology Research 1, no. 2 (June 6, 2019). Accessed October 5, 2024. https://journals.nipes.org/index.php/njstr/article/view/47.