SWAMY, N. N.; SOORYANARAYANA, B. Open neighbourhood colouring of some path related graphs. Eurasian Mathematical Journal, [S. l.], v. 6, n. 4, p. 77–91, 2015. Disponível em: https://emj.enu.kz/index.php/main/article/view/624. Acesso em: 17 sep. 2025.