Rao, T. J. Alternative estimators using auxiliary information in sample surveys. (English) Zbl 1305.62054 Aligarh J. Stat. 29, 39-50 (2009). MSC: 62D05 Sampling theory, sample surveys PDF BibTeX XML Cite \textit{T. J. Rao}, Aligarh J. Stat. 29, 39--50 (2009; Zbl 1305.62054)