SÁNCHEZ M, José M. An Introduction to Riemannian Geometry: Una Introducción a la Geometría Riemanniana. Mathematics, Education and Internet Journal, [S. l.], v. 20, n. 2, 2020. DOI: 10.18845/rdmei.v20i2.5050. Disponível em: https://revistas.tec.ac.cr/index.php/matematica/article/view/5050. Acesso em: 7 may. 2024.