CERTAIN DERIVATION CONDITIONS ON LORENTZIAN -SASAKIAN MANIFOLDS. Global Journal of Science Frontier Research, [S. l.], v. 12, n. F2, p. 101–106, 2012. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/102077. Acesso em: 6 feb. 2026.