Tahmasebi, S., M. Eskandarzadeh, and Z. Almaspoor. “Inferences on a Scale Parameter of Bivariate Rayleigh Distribution by Ranked Set Sampling”. Pakistan Journal of Statistics and Operation Research, Vol. 13, no. 1, Mar. 2017, pp. 1-16, doi:10.18187/pjsor.v13i1.1453.