A Review on Multilevel Approaches for Security in Cloud by Using ABE . International Journal of Innovative Research in Computer Science & Technology, [S. l.], v. 7, n. 2, p. 18–21, 2019. Disponível em: https://journals.acspublisher.com/index.php/ijircst/article/view/13369. Acesso em: 4 apr. 2025.