A Class of Improved Estimators for Estimating the Population Mean in Double Sampling and its properties. Journal of Statistics, [S. l.], v. 24, 2017. DOI: 10.65463/jstat.2017.46. Disponível em: https://jstat.gcu.edu.pk/index.php/jstat/article/view/46. Acesso em: 12 aug. 2026.