@article{
  author = {ارجمند نیا, A.A, افروز, GH., تازیکی, T., GH, S.},
  title = {Review the Effectiveness of working in the Dark Room to Increase the Attention Span of Mentally Retarded Students},
  journal = {Psychological Models and Methods},
  year = {2015},
  volume = {6},
  number = {1},
  pages = {47-60},
  doi = {}
}