INGALAHALLI, G.; BAGEWADI, C.S. A Study on $\phi$-Symmetric $\tau$-curvature tensor in $N(k)$-contact metric manifold. Carpathian Mathematical Publications, [S. l.], v. 6, n. 2, p. 203–211, 2014. DOI: 10.15330/cmp.6.2.203-211. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1352. Acesso em: 19 jul. 2024.