A parallel vector field on Riemannian manifolds admitting semi-symmetric non-metric connection. Nonlinear Studies, [S. l.], v. 31, n. 3, p. 965–975, 2024. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/3710. Acesso em: 11 oct. 2024.