IBRAHIM YAHAYA, Salissou; EL BRIRCHI, El Hassan; EL AZZAB, Driss. Impact of datum transformation on local variations of geometric geoid in Niger. Geodesy and Cartography, [S. l.], v. 43, n. 4, p. 147–157, 2017. DOI: 10.3846/20296991.2017.1412615. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/1699. Acesso em: 9 may. 2025.