@article{Okafor_2001, title={Treatment of non-response in successive sampling}, volume={61}, url={https://rivista-statistica.unibo.it/article/view/1173}, DOI={10.6092/issn.1973-2201/1173}, abstractNote={Estimators of the population mean have been presented for sampling on two successive occasions when there is non-response in the sample. These estimators have been derived using the Hansen and Hurwitz (1946) procedure for treating non-response. The estimators were found to be more efficient than the Hansen-Hurwitz estimator.}, number={2}, journal={Statistica}, author={Okafor, Fabian C.}, year={2001}, month={Jan.}, pages={195–204} }