Roberto Boselli and  Mirko Cesarini and  Mario Mezzanzanica,  Customer Knowledge and Service Development, the Web 2.0 Role in Co-production.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2008, vol. 16(4). 1066 - 1072
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/3068.