ZHAO, Hanwen. Homotopy Theory and Fundamental Groups in Topological Spaces: Theoretical Foundations and Applications. Science and Technology of Engineering, Chemistry and Environmental Protection, [S. l.], v. 2, n. 6, p. 4582, 2024. DOI: 10.61173/asnj7g19. Disponível em: https://stecep.deanfrancis.press/article/view/1037. Acesso em: 4 nov. 2026.