Massahi, M., Tohidi, H., & Golrizgashti, S. "Development of a Model to Evaluate the Efficiency of Maintenance Units for Automated Guided Vehicles in Industry 4.0Using an Integrated Approach Based on Data Envelopment Analysis and Game Theory", International Journal of Reliability, Risk and Safety: Theory and Application, 9, 1, 2026, 84–104. doi: 10.22034/IJRRS.2026.9.1.6