-, .-.; سيف; خيري. New Ratio Estimators in Simple Random Sampling Using (K) Factor. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 10, n. 1, p. 195–206, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/stats/article/view/20682. Acesso em: 5 aug. 2025.