MOHIUL ISLAM, A. S. M.; HABIBUR RAHMAN, Md. Spatially Closed FRW Model Leads to Einstein’s Universe with Cosmological Constant. International Astronomy and Astrophysics Research Journal, [S. l.], v. 4, n. 1, p. 182–189, 2022. Disponível em: https://journaliaarj.com/index.php/IAARJ/article/view/75. Acesso em: 4 oct. 2026.