García Jiménez, Diana Constanza, Margarita Vásquez Prediga, and Boris Lugo Martínez. 2021. “Effectiveness of the SECOP I and II Electronic Public Procurement System in the Sixth Category Municipalities of Antioquia”. Unaciencia, Revista De Estudios E Investigaciones 13 (25): 107-19. https://doi.org/10.35997/unaciencia.v13i25.564.