DHUNGEL, P.; KHANAL, U. Particle number and current in Dirac field in the closed universe. Scientific World, [S. l.], v. 9, n. 9, p. 4–7, 2011. DOI: 10.3126/sw.v9i9.5508. Disponível em: https://www.nepjol.info/index.php/SW/article/view/5508. Acesso em: 17 may. 2024.