@article{
  author = {Baradaran, Vahid, Barad, Mozafar, Mohammadi, Mahya},
  title = {The Analysis of Obstacles of Developing Productivity in Main
Department of Islamic republic of Iran rail road wagons based on
productivity indicators and presenting an effective procedure for its
promotion},
  journal = {The Journal of Productivity Management},
  year = {2017},
  volume = {11},
  number = {2},
  pages = {145-180},
  doi = {}
}