Team S. A New Ratio Estimator for Population total in the Presence of Nonresponse under Unequal Probability Sampling without Replacement: Chugiat Ponkaew, Nuanpan Lawson. Thai J Math [Internet]. 2018 Dec. 30 [cited 2024 Dec. 22];:417-29. Available from: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/750