Hossein Ali Akbarpour and  Fatemeh Dadkhah,  Two DEA Based Ant Algorithms for CMS Problems.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2012, vol. 61(1). 79 - 83
    [viewed 21 April 2021]. Available from: https://publications.waset.org/pdf/4465.