[1]
Akbar Ali Shah and M. Aleem, “Estimating Income Variances by Probability Sampling: A Case Study”, JESPK, vol. 4, no. 2, pp. 194–201, Jun. 2010, Accessed: Aug. 14, 2026. [Online]. Available: https://jes.ac.pk/index.php/jes/article/view/633