JAVADI, H. .; FOROUZBAKHSH, F. .; JAHANSHIR, A. . Definition of singularity due to Newton’s second law counteracting gravity. Scientific Journal of Pure and Applied Sciences, [S. l.], v. 2, n. 3, p. 116-124, 2013. Disponível em: http://sjournals.com/index.php/sjpas/article/view/989. Acesso em: 18 dec. 2024.