S. K. VAIDYA; N. J. KOTHARI. Line gracefulness in the context of switching of a vertex. Malaya Journal of Matematik, India, v. 3, n. 03, p. 233–240, 2015. DOI: 10.26637/mjm303/002. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/472. Acesso em: 24 nov. 2024.