J. C. KANANI; V. J. KANERIA. Graceful labeling in a graph consisting chord with quadrilateral snake. Malaya Journal of Matematik, India, v. 9, n. 01, p. 415–418, 2021. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1051. Acesso em: 16 jul. 2024.