WASET
    Tim Klemke and  Peter Nyhuis,  Lean Changeability – Evaluation and Design of Lean and Transformable Factories.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 454 - 461
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/157.