Shehata, A.G., Zarzoura, F.H. and El-Mewafi, M. 2023. Precision evaluation for different GNSS RINEX 3 using online services and open-source software PPP-MANS. Geodesy and Cartography. 49, 3 (Oct. 2023), 137–141. DOI:https://doi.org/10.3846/gac.2023.17499.