WASET
    Ajay Gupta and  Arvind Bhardwaj and  Arun Kanda,  Fundamental Concepts of Theory of Constraints: An Emerging Philosophy.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2010, vol. 46(10). 2089 - 2095
    [viewed 08 May 2024]. Available from: https://publications.waset.org/pdf/83.