Kumar Gangele R, Kumar Vishwakarma G, Kumar Choubey S. An Efficient Class on Linear Combination of Ratio Type Estimators for Estimating the Population Mean. Thail. Stat. [Internet]. 2022 Mar. 28 [cited 2024 Apr. 29];20(2):284-92. Available from: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/246341