1.
Silva Ribeiro MF, Nery de Oliveira L, da Silva TF. Poincar´e duality and the existence of exotic structures on n-spheres. LAJM [Internet]. 2023 Aug. 13 [cited 2024 Oct. 6];2(01):58-9. Available from: https://www.lajm.ufscar.br/index.php/capa/article/view/25