New Symmetrized Estimator of Population Total in Unequal Probability Sampling. Journal of Statistics, [S. l.], v. 13, 2006. DOI: 10.65463/jstat.2006.147. Disponível em: https://jstat.gcu.edu.pk/index.php/jstat/article/view/147. Acesso em: 11 aug. 2026.