AHAMED, Sahriar. Theory of gateway in case of time travel. International Journal of Advanced Astronomy, [S. l.], v. 7, n. 1, p. 15–16, 2019. DOI: 10.14419/ijaa.v7i1.20599. Disponível em: https://www.sciencepubco.com/index.php/IJAA/article/view/20599.. Acesso em: 19 may. 2024.