Estimate the General Trend using Semi parametric Regression Models with a Forecast Value of GDP in Iraq. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), [S. l.], v. 35, n. 1, p. 26–44, 2021. DOI: 10.55562/jrucs.v35i1.263. Disponível em: https://jrucs.iq/index.php/JAUCS/article/view/263. Acesso em: 9 oct. 2025.