@article{
  author = {Hadi-Vencheh, A., Niazi-Motlagh, M.},
  title = {A new non-parametric approach for
suppliers selection},
  journal = {Theory of Approximation and Applications},
  year = {2016},
  volume = {10},
  number = {1},
  pages = {41-55},
  doi = {}
}