Jeelani, M. I., Mir, S., Khan, I., Maqbool, S., Nazir, N. and Jeelani, F. (2015) “Rank Set Sampling in Improving the Estimates of Simple Regression Model”, Pakistan Journal of Statistics and Operation Research, 11(1), pp. 41-51. doi: 10.18187/pjsor.v11i1.660.