Soemadi, K., Iskandar, B. P., & Taroepratjeka, H. (2014). Optimal Overhaul-Replacement Policies for Repairable Machine Sold with Warranty. Journal of Engineering and Technological Sciences, 46(4), 465-483. https://doi.org/10.5614/j.eng.technol.sci.2014.46.4.9