BASIT, Z.; BHATTI, M. I. Efficient Classes of Estimators of Population Variance in Two-Phase Successive Sampling Under Random Non-Response. Statistica, [S. l.], v. 82, n. 2, p. 177–198, 2022. DOI: 10.6092/issn.1973-2201/12686. Disponível em: https://rivista-statistica.unibo.it/article/view/12686. Acesso em: 25 apr. 2024.