Kamlesh KUMAR; Sunit KUMAR. Estimators for the Product of Two Population Means Using Auxiliary Attribute in the Presence of Non-response. Novel Research Aspects in Mathematical and Computer Science Vol. 6, [S. l.], p. 130–139, 2022. DOI: 10.9734/bpi/nramcs/v6/3210A. Disponível em: https://stm.bookpi.org/NRAMCS-V6/article/view/7767. Acesso em: 14 jun. 2026.