Ravanappan, Prathipa, P. Ilanchezhian, N. Chandrasekaran, S. Prabu, and N. Naga Saranya. “Secure Blockchain Transactions for Electronic Health Records Based on an Improved Attribute-Based Signature Scheme (IASS)”. International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 4s (April 3, 2023): 77–83. Accessed June 17, 2024. https://ijritcc.org/index.php/ijritcc/article/view/6309.