%0 Journal Article %A Kordrostami‎‎, S., Jahani Sayyad ‎Noveiri, M. %T Evaluating the Efficiency of Firms with Negative Data in Multi-Period Systems: An Application to Bank ‎Data %J International Journal of Industrial Mathematics %V 9 %N 1 %P 27-35 %D 2017 %R %U https://sanad.iau.ir/fa/Article/846022