Raman Sinha R, Khanna B. Efficient Estimation for Ratio of Means Using Dual Auxiliary Information under Non-Response. Thail. Stat. [internet]. 2025 Feb. 17 [cited 2026 Sep. 14];22(3):736-49. available from: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/257940