VERMA, G. . . On A Compendious Structure On A Differentiable Manifold . Journal of Qassim University for Science, [S. l.], v. 9, n. 2, p. 153–164, 2016. Disponível em: https://jnsm.qu.edu.sa/index.php/jnm/article/view/1806. Acesso em: 20 sep. 2024.