@article{
  author = {Amirfakhrian, Majid},
  title = {Approximation of the n-th Root of a Fuzzy
Number by Polynomial Form Fuzzy
Numbers},
  journal = {Theory of Approximation and Applications},
  year = {2015},
  volume = {9},
  number = {1},
  pages = {1-16},
  doi = {}
}