LAACHEB, D.; KHALDI, A. Demographic projections of the active population in Batna Province and its needs – prospects for 2050 using the spectrum program. International journal of economic perspectives, [S. l.], v. 19, n. 9, p. 86–101, 2025. Disponível em: http://ijeponline.org/index.php/journal/article/view/1153. Acesso em: 13 nov. 2025.