A.Shekinah prema sunaina. “Study on Competent and Revocable Data Access Control Scheme for Multi-Authority Cloud Storage Systems”. International Journal of Computer Engineering in Research Trends 2, no. 5 (May 31, 2015): 365–368. Accessed June 2, 2026. https://www.ijcert.org/index.php/ijcert/article/view/150.