ELUMALAI, A. Cycle with Parallel Chords of Pendant Edge Extension is Graceful. Communications in Mathematics and Applications, [S. l.], v. 5, n. 2, p. 53–58, 2014. DOI: 10.26713/cma.v5i2.246. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/246. Acesso em: 27 apr. 2024.