Application of the Four-Color Theorem for coloring a city map. Balkan Journal of Applied Mathematics and Informatics, [S. l.], v. 3, n. 1, p. pp. 25–36, 2020. Disponível em: https://js.ugd.edu.mk/index.php/bjami/article/view/3427. Acesso em: 3 oct. 2025.