%0 Journal Article %A Joghataie, Mahboobeh, Hosseinzadeh lotfi, Farhad, Allahviranloo, ‪Tofigh %T Efficiency and Return to Scale of Two-Stage network in Data Envelopment Analysis Using Additive Model %J International Journal of Data Envelopment Analysis %V 8 %N 2 %P 69-78 %D 2020 %R %U https://sanad.iau.ir/fa/Article/826367