@article{
  author = {Fakhimi Azar, Sirous, Akbari Vaneabad, Morteza, Rasouli, Reza},
  title = {Investigating the Effect of Marketing Mix (4P) on the Sales Increase of Waterheaters Produced by Ghaynar Khazar Compay in Tabriz},
  journal = {The Journal of Productivity Management},
  year = {2011},
  volume = {5},
  number = {1},
  pages = {79-106},
  doi = {}
}