M. RAJKUMAR1 , M. CHANDRAMOULEESWARAN2. Homomorphisms on S-Valued Graphs. International Journal of Emerging Trends in Science and Technology, [S. l.], v. 3, n. 10, p. 4695–4703, 2016. Disponível em: http://igmpublication.com/ijetst.in/index.php/ijetst/article/view/1230. Acesso em: 31 jan. 2025.