MACHADO FERNÁNDEZ, J. R.; LORENZO RODRÍGUEZ, Y.; GUTIÉRREZ VÁZQUEZ, Y.; LEÓN ROSICH, D. Estimation of Frequencies for National Shortwave Network with Automatic Link Establishment Equipment. Ingeniería, [S. l.], v. 26, n. 2, p. 79–92, 2017. DOI: 10.15517/jte.v26i2.21519. Disponível em: https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/21519. Acesso em: 2 may. 2024.