DOBESOVA, Zdena; VALENT, Tomas. Program extension for diagram maps. Geodesy and Cartography, [S. l.], v. 37, n. 1, p. 22–28, 2011. DOI: 10.3846/13921541.2011.558330. Disponível em: https://journals.vilniustech.lt/index.php/GAC/article/view/5391. Acesso em: 12 may. 2025.