Arunachalam, J., A. V. Murali, and M. Sankar Das. “Petrogenesis of Basalts: Examination of REE Data Using Pattern Recognition Approach Through Principal Component Analysis”. Journal of Geological Society of India 31, no. 3 (March 1, 1988): 277–298. Accessed September 20, 2024. https://geosocindia.com/index.php/jgsi/article/view/66002.