Guangjie Liu,  Research on the Methodologies of the Opportune Innovation - A Case Study of BYD.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2013, vol. 76(4). 870 - 876
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9767.