GIRKUS, Romualdas; LUKOŠEVIČIUS, Viktoras. Relief of Lithuania in cartographic documents. Geodesy and Cartography, [S. l.], v. 31, n. 4, p. 134–140, 2012. DOI: 10.3846/13921541.2005.9636679. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/10963. Acesso em: 12 may. 2025.