(2007). Use a letter (Ridge Regression) to measure the impact of variablesEconomic fixed capital formation in Iraq for the period (1990 - 2000). , 2(29), 100-119.
. "Use a letter (Ridge Regression) to measure the impact of variablesEconomic fixed capital formation in Iraq for the period (1990 - 2000)". , 2, 29, 2007, 100-119.
(2007). 'Use a letter (Ridge Regression) to measure the impact of variablesEconomic fixed capital formation in Iraq for the period (1990 - 2000)', , 2(29), pp. 100-119.
Use a letter (Ridge Regression) to measure the impact of variablesEconomic fixed capital formation in Iraq for the period (1990 - 2000). , 2007; 2(29): 100-119.