Kumar, B. ., M. . Kumar, S. . Rizvi, and M. I. J. . Bhat. “ESTIMATION OF POPULATION MEAN THROUGH IMPROVED CLASS OF RATIO TYPE ESTIMATORS USING AUXILIARY INFORMATION”. Journal of Reliability and Statistical Studies, vol. 11, no. 01, Mar. 2018, pp. 01-07, https://journals.riverpublishers.com/index.php/JRSS/article/view/20891.