@article{
  author = {Nikkhahan, B, Habibi Badrabadi, A, Tarokh, M.J},
  title = {Customer lifetime value model in an online toy store},
  journal = {Journal of Industrial Engineering International},
  year = {2011},
  volume = {7},
  number = {12},
  pages = {19-31},
  doi = {}
}