VEGA LEÓN, Andy Fabricio. Review of the Development of VHF - UHF Bands Cognitive Radio Technology in Ecuador. Revista Tecnológica - ESPOL, Guayaqui, EC, v. 32, n. 1, p. 5, 2020. DOI: 10.37815/rte.v32n1.680. Disponível em: https://rte.espol.edu.ec/index.php/tecnologica/article/view/680. Acesso em: 18 oct. 2025.