SULEIMAN, S. A.; ADEWARA, A. A. . Improved Modified Ratio Estimation of Population Mean Using Information on Size of the Sample . Tanzania Journal of Science, [S. l.], v. 47, n. 5, p. 1753–1765, 2021. DOI: 10.4314/tjs.v47i5.22. Disponível em: https://tjs.udsm.ac.tz/index.php/tjs/article/view/961. Acesso em: 4 may. 2024.