COMPOSITE RATIO ESTIMATORS IN A TWO-PHASE SAMPLING USING MULTIPLE ADDITIONAL SUPPLEMENTARY VARIABLES. Far East Journal of Applied Mathematics, [S. l.], v. 117, n. 1, p. 49–66, 2024. DOI: 10.17654/0972096024003. Disponível em: https://pphmjopenaccess.com/fejam/article/view/1606. Acesso em: 5 jan. 2026.