Rizlan W, Hadi Purba H, . H, . S, Nasir M, Aisyah S. The effect of efficiency measurement to the improvement of maintenance productivity. IJET [Internet]. 2019 Jul. 22 [cited 2026 Feb. 9];7(4):6964-9. Available from: https://www.sciencepubco.com/index.php/IJET/article/view/23255