[1]
Bandyopadhyay, A. and Singh, G.N. 2015. Estimation of Population Variance in Two-Phase Sampling in Presence of Random Non-Response. Pakistan Journal of Statistics and Operation Research. 11, 4 (Dec. 2015), 525-542. DOI:https://doi.org/10.18187/pjsor.v11i4.1028.