Families of Graceful Spiders with 3ℓ, 3ℓ + 2 and 3ℓ – 1 Legs. Contemporary Mathematics , [S. l.], v. 5, n. 4, p. 4908–4920, 2024. DOI: 10.37256/cm.5420243289. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/3289. Acesso em: 24 dec. 2025.