Mani Deepika, A, T Vijaya Gowri, and P Sravana. “Principal Component Analysis for Concrete Mix by Ranking Method”. International Journal of Engineering & Technology 7, no. 3.29 (August 24, 2018): 453–457. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/19288.