Abdelatif Djenaoui, Hamza Reffad, and Adel Altı. “Secure E-Healthcare System Based on Lightweight Key Management and Proof of Authority Blockchain”. International Journal of Computational and Experimental Science and Engineering 11, no. 4 (December 10, 2025). Accessed March 15, 2026. https://ijcesen.com/index.php/ijcesen/article/view/4140.