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 4, no. 2 (September 6, 2016): 142–147. Accessed November 22, 2024. https://sciencepubco.com/index.php/IJAES/article/view/6376.