Eleazer Kurbah, Ronald, and Phrangstone Khongji. “A New Exponential Ratio-Type Estimator of Population Mean Using Mean and Median with Two Auxiliary Variables under Double Sampling”. Thailand Statistician 22, no. 2 (March 31, 2024): 458–470. accessed September 14, 2026. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/253434.