Bhushan, Shashi, Anoop Kumar, Dushyant Tyagi, and Saurabh Singh. “On Some Improved Classes of Estimators Under Stratified Sampling Using Attribute”. Journal of Reliability and Statistical Studies 15, no. 01 (April 16, 2022): 187–210. Accessed May 19, 2024. https://journals.riverpublishers.com/index.php/JRSS/article/view/20313.