R. N. SINGH; S. K. PANDEY; KIRAN TIWARI. On Quarter-Symmetric Metric Connection in an Indefinite Sasakian Manifold. Journal of International Academy of Physical Sciences, [S. l.], v. 17, n. 3, p. 255–275, 2013. Disponível em: https://www.iaps.org.in/journal/index.php/journaliaps/article/view/554. Acesso em: 15 may. 2024.