Obeidat, Mohammed, Rahaf Namneh, Ahmad Hanandeh, and Aymen Rawashdeh. “New Highly Efficient One and Two-Stage Ranked Set Sampling Variations”. Pakistan Journal of Statistics and Operation Research 21, no. 2 (June 5, 2025): 163-176. Accessed August 30, 2025. https://pjsor.com/pjsor/article/view/4872.