Reza Nadimi and  Fariborz Jolai,  Joint Use of Factor Analysis (FA) and Data Envelopment Analysis (DEA) for Ranking of Data Envelopment Analysis.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 155 - 159
    [viewed 19 October 2019]. Available from: https://publications.waset.org/pdf/13961.