-, .-.; ريكان. On some Ratio and Regression Estimators for the Finite Population Variance in Two Phase Sampling. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 10, n. 2, p. 117–132, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/stats/article/view/20631. Acesso em: 5 aug. 2025.