Machado Fernández, José Raúl, Yoanne Lorenzo Rodríguez, Yaser Gutiérrez Vázquez, y David León Rosich. «Estimation of Frequencies for National Shortwave Network With Automatic Link Establishment Equipment». Ingeniería 26, no. 2 (enero 19, 2017): 79–92. Accedido julio 17, 2024. https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/21519.