فهرس المقالات Saeed Jahangard Patavani المقاله 1 - Calculation of the Efficiency of Two-Stage Network Structures with Additional Inputs to the Second Stage by SBM Approach: A Case Study on Credit Branches of an Iranian State Bank in Guilan Province Saeed Jahangard Patavani Nasima Mahboubi International Journal of Data Envelopment Analysis , العدد 1 , السنة 4 , زمستان 2016