Jeelani, M Iqbal, S.A. Mir, I. Khan, S. Maqbool, Nageena Nazir, and Fehim Jeelani. “Rank Set Sampling in Improving the Estimates of Simple Regression Model”. Pakistan Journal of Statistics and Operation Research 11, no. 1 (April 6, 2015): 41-51. Accessed August 7, 2025. https://pjsor.com/pjsor/article/view/660.