Kandil, I., A. Awad, and M. El-Mewafi. “Role of Multi-Constellation GNSS in the Mitigation of the Observation Errors and the Enhancement of the Positioning Accuracy”. International Journal of Geoinformatics 19, no. 4 (May 20, 2023): 25–35. Accessed May 21, 2026. https://ijg.e-geoinfo.com/index.php/journal/article/view/2631.