AHMED, K. M. On the Study of Jacobi Fields in Riemannian Manifolds. Bangladesh Journal of Scientific and Industrial Research, [S. l.], v. 43, n. 4, p. 521–528, 2009. DOI: 10.3329/bjsir.v43i4.2242. Disponível em: https://banglajol.info/index.php/BJSIR/article/view/2242. Acesso em: 27 sep. 2024.