NGUYEN, Cong Thinh; LE, C. Ngoc. Utilizing Layer-2 Blockchain and IPFS Innovations for Establishing a Robust System for Secure Document Signing and Management. JST: Smart Systems and Devices, [S. l.], v. 34, n. 2, p. 44–53, 2024. DOI: 10.51316/jst.174.ssad.2024.34.2.6. Disponível em: https://jst.vn/index.php/ssad/article/view/77. Acesso em: 18 jun. 2025.