Subramani, J., and G. Prabavathy. 2015. “MEDIAN BASED MODIFIED RATIO ESTIMATORS WITH KNOWN SKEWNESS AND CORRELATION COEFFICIENT FOR THE ESTIMATION OF FINITE POPULATION MEAN”. Journal of Reliability and Statistical Studies 8 (01):15-23. https://journals.riverpublishers.com/index.php/JRSS/article/view/21065.