@article{
  author = {ناهیدی, محمدرضا, آذرکسب, اصغر, محمدنژاد, جواد, علیمحمدی اصل, ابراهیم},
  title = {},
  journal = {Financial Engineering and Portfolio Management},
  year = {2011},
  volume = {2},
  number = {9},
  pages = {155-178},
  doi = {}
}