UL HAQ, H. B.; ABBAS, A.; KHAN, R. A.; AKHTAR, A. N.; AKRAM, W.; NAWAZ, S.; MAYO, F. I.; BHATTI, A. I. E-Healthcare Using Block Chain Technology and Cryptographic Techniques: A Review. Pakistan Journal of Engineering and Technology, [S. l.], v. 5, n. 4, p. 21–28, 2022. DOI: 10.51846/vol5iss4pp21-28. Disponível em: https://journals.uol.edu.pk/pakjet/article/view/2225. Acesso em: 5 jul. 2025.