@article{
  author = {niknafs, javad, keramati, mphammadali, haghighatmonfared, jalal},
  title = {Evaluation efficiency of the internal structure of decision making units in the past, present and future using dynamic network data envelopment analysis and artificial neural network},
  journal = {Modiriat-e- farda},
  year = {2019},
  volume = {18},
  number = {59},
  pages = {87-102},
  doi = {}
}