BRIGHAM, ROBERT C.; DUTTON, RONALD D. Pairs of maximal "almost" disjoint isomorphic subgraphs of spiders. Utilitas Mathematica , [S. l.], v. 52, 1997. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/39. Acesso em: 8 may. 2026.