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 16, 2024. https://journals.sfu.ca/ijg/index.php/journal/article/view/2631.