Comparing traditional estimators and the estimators of (PSO) algorithm for some growth models of gross domestic product in Iraq. Periodicals of Engineering and Natural Sciences, [S. l.], v. 8, n. 1, p. 491–507, 2020. DOI: 10.21533/pen.v8.i1.1066. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/1066. Acesso em: 27 jul. 2026.