Upadhyaya, L. N.; Kushwaha, K. S.; Singh, H. P. A modified chain ratio-type estimator in two-phase sampling using multi auxiliary information. (English) Zbl 0850.62151 Metron 48, No. 1-4, 381-393 (1990). Cited in 3 Documents MSC: 62D05 Sampling theory, sample surveys PDF BibTeX XML Cite \textit{L. N. Upadhyaya} et al., Metron 48, No. 1--4, 381--393 (1990; Zbl 0850.62151) OpenURL