SHAH, R. J. Some curvature tensors in N(k)-contact metric manifold. BIBECHANA, [S. l.], v. 16, p. 55–63, 2018. DOI: 10.3126/bibechana.v16i0.19674. Disponível em: https://www.nepjol.info/index.php/BIBECHANA/article/view/19674. Acesso em: 25 apr. 2024.