WASET
    Yiannis G. Smirlis ,  Classifying and Predicting Efficiencies Using Interval DEA Grid Setting.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2018, vol. 138(6). 119 - 123
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10009165.