1. Sampling Techniques;Cochran,1977
2. The estimation of the yields of cereal experiments by sampling for the ratio of grain to total produce;Cochran;J. Agric. Sci.,1940
3. Estimation of the finite population mean in two phase sampling when auxiliary variables are attributes;Shabbir;Hacettepe Journal of Mathematics and Statistics,2010
4. Improvement in estimating the population mean in simple random sampling using information on auxiliary attribute;Abd-Elfattah;Appl. Math. Comput.,2010
5. Ratio estimators in simple random sampling using information on auxiliary attribute;Singh;Auxiliary Information and a priori Values in Construction of Improved Estimators,2007