On the Invalidity of the Hawking-Penrose Singularity aTheoremsa and Acceleration of the Universe from Negative Cosmological Constant. Global Journal of Science Frontier Research, [S. l.], v. 13, n. 25, p. 21–30, 2013. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/103190. Acesso em: 26 oct. 2026.