Ajay Verma and  Nitin Seth,  A Conceptual Framework for Supply Chain Competitiveness.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2011, vol. 57(9). 1187 - 1192
    [viewed 20 October 2021]. Available from: https://publications.waset.org/pdf/7828.