Extension of Eulerian Graphs and Digraphs. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 8, n. 2, p. 1565–1570, 2014. DOI: 10.24297/jam.v8i2.2565. Disponível em: https://rajpub.com/index.php/jam/article/view/1666. Acesso em: 14 may. 2025.