G.Lucy, D.Jaya Narayana Reddy, and D.Jaya Narayana Reddy. 2015. “Enabling Fine-Grained Multi-Keyword Search Supporting Classified Sub-Dictionaries over Encrypted Cloud Data”. International Journal of Computer Engineering in Research Trends 2 (12):919-23. https://www.ijcert.org/index.php/ijcert/article/view/545.