WANG, W. . Trans-Sasakian 3-manifolds with Einstein-like Ricci operators. Quaestiones Mathematicae, [S. l.], v. 45, n. 9, p. 1473–1483, 2022. DOI: 10.2989/16073606.2021.1950861. Disponível em: https://www.ajol.info/index.php/qm/article/view/236545. Acesso em: 10 oct. 2026.