SABAH, noor; SAGHEER, A.; DAWOOD, O. Survey: (Blockchain-Based Solution for COVID-19 and Smart Contract Healthcare Certification). Iraqi Journal For Computer Science and Mathematics, [S. l.], v. 2, n. 1, p. 1–8, 2021. DOI: 10.52866/ijcsm.2021.02.01.001. Disponível em: https://journal.esj.edu.iq/index.php/IJCM/article/view/59. Acesso em: 21 sep. 2024.