1. Arnab, R., Singh, S.: A note on variance estimation for the generalized regression predictor. Aust. N. Z. J. Stat. 47(2), 231–234 (2005)
2. Clement, E.P.: Calibration approach separate ratio estimator for population mean in stratified sampling. Int. J. Mod. Math. Sci. 13(4), 377–384 (2015)
3. Clement, E.P.: An improved ratio estimator for population mean in stratified random sampling. Eur. J. Stat. Probab. 4(4), 12–17 (2016)
4. Clement, E.P.: Efficient exponential estimators of population mean in survey sampling. Int. J. Math. Comput. 28(3), 94–106 (2017)
5. Clement, E.P., Udofia, G.A., Enang, E.I.: Estimation for domains in stratified random sampling in the presence of non-response. Am. J. Math. Stat. 4(2), 65–71 (2014)