Ahmad, W. M. A. W., N. A. Aleng, Z. Ali, and M. S. M. Ibrahim. “Statistical Modeling via Bootstrapping and Weighted Techniques Based on Variances”. Engineering, Technology & Applied Science Research 8, no. 4 (August 18, 2018): 3135–3140. Accessed April 7, 2025. https://mail.etasr.com/index.php/ETASR/article/view/2126.