Fazal Shakoor, Muhammad Atif, Khazan sher, Sajid Khan, Shumaila Wazir, and Muhammad Farooq. “Optimized Variance Estimation in Simple Random Sampling With Auxiliary Information”. Dialogue Social Science Review (DSSR) 3, no. 8 (September 1, 2025): 230–238. Accessed April 22, 2026. https://dialoguesreview.com/index.php/2/article/view/918.