Singh, Rajesh, and Sachin Malik. “An Improved Estimator Of Finite Population Mean Using Auxiliary Attribute(S) In Stratified Random Sampling Under Non-Response”. Pakistan Journal of Statistics and Operation Research 10, no. 2 (August 12, 2014): 147-155. Accessed June 13, 2025. https://pjsor.com/pjsor/article/view/543.