GORDON, C. On the homeomorphism problem for 4-manifolds. New Zealand Journal of Mathematics, [S. l.], v. 52, p. 821–826, 2022. DOI: 10.53733/205. Disponível em: https://www.nzjmath.org/index.php/NZJMATH/article/view/205. Acesso em: 20 may. 2024.