VARIATIONS IN TOTAL ELECTRON CONTENT DURING THE PHASES OF LOW AND HIGH SOLAR ACTIVITIES. Jurnal Teknologi, [S. l.], v. 78, n. 5-8, 2016. DOI: 10.11113/jt.v78.8751. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/8751.. Acesso em: 23 jul. 2024.