1.
Martínez Pulido A, Francisco Garat E. The ionospheric F2 region winter anomaly and its dependence on solar activity in the northern and southern hemispheres. Geofis Int [Internet]. 1 de abril de 1997 [citado 19 de mayo de 2024];36(2):121-6. Disponible en: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1296