Twins Ionospheric Links in Sudan and South Sudan Based on University of Khartoum Ionospheric Shells (UKIS). University of Khartoum Engineering Journal, [S. l.], v. 4, n. 2, 2022. DOI: 10.53332/kuej.v4i2.835. Disponível em: https://onlinejournals.uofk.edu/kuej/article/view/835. Acesso em: 8 يوليو. 2026.