Hanbaba, R. y Zolesi, B. 2000. Improved quality of service in ionospheric telecommunication systems planning and operation: Cost 251 Major Achievements. Física de la Tierra, 12, 61. Recuperado 14 de noviembre de 2024 a partir de https://revistas.ucm.es/index.php/FITE/article/view/FITE0000110061A