WASET
    Noemy Witt Ferreira and  Flávio de São Paulo Filho,  Innovation in Business.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 858 - 863
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/385.