The Twin Domination Number of Strong Product of Digraphs. Communications in Mathematical Research, [S. l.], v. 32, n. 4, p. 332–338, 2021. DOI: 10.13447/j.1674-5647.2016.04.05. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/8903. Acesso em: 27 feb. 2026.