GIRKUS, Romualdas; LUKOŠEVIČIUS, Viktoras. Pictorial maps and maps with drawings. Geodesy and Cartography, [S. l.], v. 30, n. 2, p. Ia-Ie, 2012. DOI: 10.3846/13921541.2004.9636643. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/11002. Acesso em: 9 may. 2025.