Prof. Dr. Attia Hussien Gomaa , trans. “Achieving Maintenance Excellence in Manufacturing Through Integration of Lean Six Sigma and Proactive Approaches: A Case Study”. International Journal of Inventive Engineering and Sciences (IJIES) 12, no. 3 (March 29, 2025): 1–14. Accessed April 4, 2025. https://journals.blueeyesintelligence.org/index.php/ijies/article/view/687.