عثمان صابر ثيرداود, and حمة شظان جمال. “Measuring and Analysing Inequality in the Distribution of Economic Welfare in Suleimania Governorate During (2007):”. Journal of Economics and Administrative Sciences, vol. 19, no. 72, Sept. 2013, p. 170, https://doi.org/10.33095/jeas.v19i72.948.