L. , Amuthavalli. Measuring the Environmental Return on Investment of Industry 4.0 Technologies: A Meta-Analysis of IoT, AI, and Digital Twin Deployments across Manufacturing Sectors. American International Journal of Computer Science and Technology, India., v. 7, n. 6, p. 119–125, 2025. DOI: 10.63282/3117-5481/AIJCST-V7I6P112. Disponível em: https://aijcst.org/index.php/aijcst/article/view/228. Acesso em: 13 may. 2026.