%0 Journal Article %T Comparison of Lower Bounds for the Variance of Unbiased Estimators for some Well-known Families of Distributions %A Nayeban, Samira %A Rezaei Roknabadi, Abdolhamid %A Mohtashami Borzadaran, Gholam Reza %J Economic Quality Control %@ 0940-5151 %D 2013