@article{
  author = {Nematollahi, E., Jafari, A., Bagheri, A.},
  title = {Effect of drought stress and salicylic acid on photosynthesis pigments and macronutrients absorption in two sunflower (Helianthus annuus L.) cultivars},
  journal = {Journal of Plant Ecophysiology},
  year = {2013},
  volume = {5},
  number = {12},
  pages = {37-51},
  doi = {}
}