Seungkyum Kim and  Yongtae Park,  A TRIZ-based Approach to Generation of Service-supporting Product Concepts.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2012, vol. 62(2). 487 - 490
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/15323.