Ponkaew, C. and Lawson*, N. 2022. New Generalized Regression Estimators Using a Ratio Method and Its Variance Estimation for Unequal Probability Sampling without Replacement in the Presence of Nonresponse. CURRENT APPLIED SCIENCE AND TECHNOLOGY. 23, 2 (Aug. 2022), DOI: 10.55003/cast.2022.02.23.007 (27 pages). DOI:https://doi.org/10.55003/cast.2022.02.23.007.