PRADHAN, Bijoy Kumar. Three phase stratified sampling with ratio method of estimation. Statistica, [S. l.], v. 73, n. 2, p. 235–251, 2013. DOI: 10.6092/issn.1973-2201/4136. Disponível em: https://rivista-statistica.unibo.it/article/view/4136. Acesso em: 28 nov. 2024.