Formulation and programming of the Annual Contracting Plan: Basic Model to improve purchases, Provincial Municipality of Gran Chimú 2020. SCIÉNDO INGENIUM, [S. l.], v. 17, n. 4, p. 201–206, 2021. Disponível em: https://revistas.unitru.edu.pe/index.php/PGM/article/view/4079. Acesso em: 18 jul. 2026.