@article{
  author = {Jahangard Patavani, Saeed, Mahboubi, Nasima},
  title = {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},
  journal = {International Journal of Data Envelopment Analysis},
  year = {2016},
  volume = {4},
  number = {1},
  pages = {881-892},
  doi = {}
}