WASET
    Carl D. Hays III,  Operating Equipment Effectiveness with a Reliability Indicator.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2022, vol. 190(10). 267 - 273
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10012737.