Lawal, Lasisi Salami, and Chris Reginald Chatwin. “A REVIEW OF GLOBAL NAVIGATION SATELLITE AND AUGMENTATION SYSTEMS”. IJRDO - Journal of Electrical And Electronics Engineering 5, no. 3 (March 7, 2019): 01-21. Accessed March 29, 2024. https://ijrdo.org/index.php/eee/article/view/2731.