SINGH, R. P.; SINGH, S. Some Affine Connexions in a Generalised Structure Manifold - II. European Journal of Pure and Applied Mathematics, [S. l.], v. 3, n. 5, p. 839–852, 2010. Disponível em: https://ejpam.com/index.php/ejpam/article/view/340. Acesso em: 13 aug. 2022.