A Simple Procedure For Unequal Probability Sampling Without Replacement and A Sample of Size 2. Journal of Statistics, [S. l.], v. 10, 2003. DOI: 10.65463/jstat.2003.178. Disponível em: https://jstat.gcu.edu.pk/index.php/jstat/article/view/178. Acesso em: 12 aug. 2026.