Widyadana, Gede Agus, and Hui Ming Wee. 2010. “Production Inventory Models for Deteriorating Items With Stochastic Machine Unavailability Time, Lost Sales and Price-Dependent Demand”. Jurnal Teknik Industri: Jurnal Keilmuan Dan Aplikasi Teknik Industri 12 (2):61-68. https://doi.org/10.9744/jti.12.2.61-68.