Generalized Variance Estimator using Two Auxiliary Variables under Stratified Random Sampling. Communication In Physical Sciences, [S. l.], v. 12, n. 2, 2025. DOI: 10.4314/fkjbsa98. Disponível em: https://journalcps.com/index.php/volumes/article/view/78. Acesso em: 10 aug. 2026.