G. Reinhart and  S. Schindler,  A Strategic Evaluation Approach for Defining the Maturity of Manufacturing Technologies.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2010, vol. 47(11). 1291 - 1296
    [viewed 23 January 2020]. Available from: https://publications.waset.org/pdf/11195.