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. IJERAT [Internet]. 2021 Jun. 19 [cited 2024 Jul. 3];7(6):1-11. Available from: https://ijerat.com/index.php/ijerat/article/view/551