محمدفراس, and حبيبعلي. “Use Aggregate Slide Estimate Additive Splines Estimation for the Diagnosis of Non-Linear Composite Model Self-Regression With Practical Application”. Journal of Economics and Administrative Sciences 23, no. 96 (April 1, 2017): 320. Accessed December 3, 2019. http://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/372.