PONKAEW, C. New ratio estimators to estimated population mean under stratified sampling with missing data. RMUTSB ACADEMIC JOURNAL, Phra Nakorn Sri Ayutthaya, v. 11, n. 1, p. 1–16, 2023. Disponível em: https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/257058. Acesso em: 7 apr. 2025.