The effect of variation of meteorological parameters on the tropospheric radio refractivity for minna. Global Journal of Science Frontier Research, [S. l.], v. 12, n. A2, p. 37–41, 2012. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/374. Acesso em: 14 aug. 2026.