Estimation of the Zero-Truncated Poisson Regression Model using Iteratively Reweighted Least Squares Method with Application: and Some Distribution Properties. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), [S. l.], v. 56, n. 1, p. 258–264, 2025. DOI: 10.55562/jrucs.v56i1.23. Disponível em: https://jrucs.iq/index.php/JAUCS/article/view/699. Acesso em: 24 apr. 2026.