Leila Jafari and  Viliam Makis,  Optimal Production and Maintenance Policy for a Partially Observable Production System with Stochastic Demand.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2019, vol. 151(7). 449 - 456
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10010545.