SARKAR, A.; SEN, M. Locally ϕ-Symmetric Generalized Sasakian-Space Forms. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 10, p. 1430–1438, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2521. Acesso em: 5 dec. 2025.