SKEIVALAS, Jonas. Ionospheric influence on increment of GPS chord coordinations, using double carrier phase differences. Geodesy and Cartography, [S. l.], v. 33, n. 2, p. 37–40, 2012. DOI: 10.3846/13921541.2007.9636714. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/10918. Acesso em: 9 may. 2025.