ALI, M. S.; AHMED, K.; KHAN, M.; ISLAM, M. M. Exterior Algebra with Differential Forms on Manifolds. Dhaka University Journal of Science, [S. l.], v. 60, n. 2, p. 247–252, 2012. DOI: 10.3329/dujs.v60i2.11528. Disponível em: https://banglajol.info/index.php/DUJS/article/view/11528. Acesso em: 16 aug. 2024.