Almost Pseudo Semi-conformally Symmetric Ricci-recurrent Space-time. Journal of International Academy of Physical Sciences, [S. l.], v. 25, n. 1, p. 37–49, 2021. Disponível em: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/55. Acesso em: 23 oct. 2026.