SINHA, Raghaw. Families of estimators for ratio and product of study characters using mean and proportion of auxiliary character in presence of non-response. International Journal of Accounting and Economics Studies, [S. l.], v. 4, n. 2, p. 142–147, 2016. DOI: 10.14419/ijaes.v4i2.6376. Disponível em: https://www.sciencepubco.com/index.php/IJAES/article/view/6376.. Acesso em: 29 apr. 2024.