Determining the optimal periodicity for preventive replacement of mechanical spare parts. مجلة الواحات للبحوث والدراسات, [S. l.], v. 8, n. 1, 2025. DOI: 10.54246/t8xc7f82. Disponível em: https://journals.univ-ghardaia.edu.dz/elwahat/article/view/840. Acesso em: 19 فبراير. 2026.