Eyo, Effiong Eyo, and E. I. Enang. “Calibration Ratio Estimators of Population Mean Using Median of Auxiliary Variable”. Journal of Modeling and Simulation of Materials 5, no. 1 (December 29, 2022): 21–30. Accessed April 20, 2024. https://journals.aijr.org/index.php/jmsm/article/view/5681.