ABELE, Māris; BALODIS, Jānis; JANPAULE, Inese; LASMANE, Ieva; RUBANS, Augusts; ZARIŅŠ, Ansis. Digital zenith camera for vertical deflection determination. Geodesy and Cartography, [S. l.], v. 38, n. 4, p. 123–129, 2012. DOI: 10.3846/20296991.2012.755324. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/4756. Acesso em: 12 may. 2025.