Fikri, Ali Zian, Dharma Widada, and Lina Dianati Fathimahhayati. “Implementation of Objective Matrix and Root Cause Analysis for Productivity Analysis PT. Indomarco Adi Prima SP Deket Lamongan”. IJIEM - Indonesian Journal of Industrial Engineering and Management 4, no. 3 (December 27, 2023): 597–608. Accessed May 28, 2026. https://training-ojs3-publikasi.mercubuana.ac.id/index.php/ijiem/article/view/21715.