Yadav, S.K., Sheela Misra, S.S. Mishra, and Shankar Prasad Khanal. “Variance Estimator Using Tri-Mean and Inter Quartile Range of Auxiliary Variable”. Nepalese Journal of Statistics 1 (December 29, 2017): 83–91. Accessed November 21, 2024. https://nepjol.info/index.php/NJS/article/view/18819.