V. S., B. N. ., A. . Kumar Bhagat, C. . C., B. . Sulaiman Alfurhood, A. . Pratap Singh, and M. . T. R. “Blockchain Based De-Duplication Analysis of Cloud Data With Data Integrity Using Policy Based Encryption Technique in Cloud Storage”. International Journal of Intelligent Systems and Applications in Engineering, vol. 11, no. 3s, Feb. 2023, pp. 161-4, https://ijisae.org/index.php/IJISAE/article/view/2555.