@article{
  author = {Farhangi, A. A., Ekhlasi, A., Toluei, P.},
  title = {Assessment of the Effects of Advertising on Increasing Sales and a Mathematical Model for Determination of this Impact on Profitability},
  journal = {Jounal of Marketing Management},
  year = {2009},
  volume = {4},
  number = {1},
  pages = {1-16},
  doi = {}
}