PONKAEW, C.; LAWSON, N. New Product Estimators for Population Mean Under Unequal Probability Sampling with Missing Data: A Case Study on the Number of New COVID-19 Patients. Thailand Statistician, [S. l.], v. 22, n. 3, p. 634–656, 2024. Disponível em: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/254773. Acesso em: 16 sep. 2026.