K. KRISHNA KUMARI; S. KAVITHA; D. NIDHA. On the upper open detour monophonic number of a graph. Malaya Journal of Matematik, India, v. 9, n. 01, p. 765–769, 2021. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1155. Acesso em: 5 nov. 2024.