NIK ZULKIFLI, S. S.; ABDULLAH, M.; ISMAIL, M. Simulation of ionospheric error on GPS signals due to changes in the direction of mobile station positions in differential GPS. Annals of Geophysics, [S. l.], v. 54, n. 6, 2012. DOI: 10.4401/ag-4973. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4973. Acesso em: 9 dec. 2021.