Nooshin Salari and Viliam Makis, A Condition-Based Maintenance Policy for Multi-Unit Systems Subject to Deterioration. journal = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2018, vol. 138(6). 650 - 654 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/10009132.