SRAVANTHI, K. .; SEKHAR, P. C. . An Efficient Integrity Verification based Multi-User Cloud Access Control Framework using Block Chain Technology on EHR Database . International Journal of Intelligent Systems and Applications in Engineering, [S. l.], v. 12, n. 9s, p. 536 –, 2023. Disponível em: https://ijisae.org/index.php/IJISAE/article/view/4406. Acesso em: 22 jul. 2024.