SİPAHİ, Erdinç, and Çetin BEKTAŞ. “SIX SIGMA APPROACH AND A PROCESS IMPROVEMENT FOCUSED APPLICATION IN THE ENERGY SECTOR”. Atlas Journal 6, no. 33 (September 15, 2020): 800–810. Accessed April 27, 2024. https://atlasjournal.net/index.php/atlas/article/view/350.