SEIDULLAYEV M.K. A Practical Blockchain-Based Authentication Approach for Secure IoT Systems Using Spatial Verification. Stanford Database Library of American Journal of Applied Science and Technology, [S. l.], v. 6, n. 05, p. 49–52, 2026. Disponível em: https://oscarpubhouse.com/index.php/sdlajast/article/view/2127. Acesso em: 19 may. 2026.