@article{
  author = {Ghattavi, H., Moafporian, Gh., Bahrani, A.},
  title = {Effect of zinc solfate sparying and iirigation intervals on yield, yield components and protein content of grain corn},
  journal = {Journal of Plant Ecophysiology},
  year = {2012},
  volume = {4},
  number = {10},
  pages = {37-48},
  doi = {}
}