Thakur, N. S. ., Yadav, K. ., & Pathak, S. . (2011). ESTIMATION OF MEAN IN PRESENCE OF MISSING DATA UNDER TWO-PHASE SAMPLING SCHEME. Journal of Reliability and Statistical Studies, 4(02), 93–104. Retrieved from https://journals.riverpublishers.com/index.php/JRSS/article/view/21979