“Application of Lean Six Sigma Approach to Reduce Worker Fatigue in Racking Areas Using DMAIC, VSM, FMEA and ProModel Simulation Methods in Sub Logistic Companies: A Case Study of Indonesia”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) 7, no. 6 (June 19, 2021): 1–11. Accessed December 22, 2024. https://ijerat.com/index.php/ijerat/article/view/551.