“PENGURANGAN NON VALUE ADDED ACTIVITIES MENGGUNAKAN METODE LEAN SIX SIGMA: Elly Wuryaningtyas Yunitasari Program Studi Teknik Industri Fakultas Teknik Universitas Sarjanawiyata Tamansiswa, Yogyakarta, DIY, Indonesia” (2018) DINTEK, 11(2), pp. 15–25. Available at: https://jurnal.ummu.ac.id/index.php/dintek/article/view/133 (Accessed: 19 January 2026).