Using Some of the Nonparametric Smoothing Models to Build An Appropriate Model for Predicting Number of Cases of Covid-19 in Iraq. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), [S. l.], v. 52, n. 2, p. 32–46, 2022. DOI: 10.55562/jrucs.v52i2.540. Disponível em: https://jrucs.iq/index.php/JAUCS/article/view/540. Acesso em: 16 apr. 2026.