Olfat, L., and mahsa pishdar. “INTERVAL TYPE-2 FUZZY DYNAMIC NETWORK DATA ENVELOPMENT ANALYSIS WITH UNDESIRABLE OUTPUTS CONSIDERING DOUBLE FRONTIERS: AN APPLICATION TO IRAN AIRPORTS’ SUSTAINABILITY EVALUATION”. International Journal of Industrial Engineering: Theory, Applications and Practice, vol. 24, no. 6, Jan. 2018, doi:10.23055/ijietap.2017.24.6.3520.