AL-SALIHI, Nawzad Kameran. FUTURE GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS). European Scientific Journal, ESJ, [S. l.], v. 11, n. 30, 2015. Disponível em: https://last.eujournal.org/index.php/esj/article/view/6363. Acesso em: 12 feb. 2026.