@article{
  author = {Rahmani, Kamaledin, Bahloli, Nader, Sadeg zadeh, Behrooz},
  title = {Development  the Mathematical Model “QFD” Based on Fuzzy Approach},
  journal = {The Journal of Productivity Management},
  year = {2012},
  volume = {6},
  number = {1},
  pages = {7-34},
  doi = {}
}