Qureshi, Muhammad Nouman, Naureen Riaz, and Muhammad Hanif. “Joint Influence of Exponential Ratio and Exponential Product Estimators for the Estimation of Clustered Population Variance in Adaptive Cluster Sampling”. Thailand Statistician 18, no. 1 (December 12, 2019): 65–76. Accessed May 5, 2024. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/228896.