Assessing the quality of raw GNSS observations and 3D positioning performance using the Xiaomi Mi 8 dual-frequency smartphone in Northwest Mexico. - Jesus René Vázquez-Ontiveros; Carlos A. Martinez-Felix; Angela Melgarejo-Morales; Leire Retegui-Schiettekatte; Guadalupe Esteban Vazquez-Becerra; Jose Ramon Gaxiola-Camacho (Earth Sci. Informatics, 2024)