@article{
  author = {Mirhashemi Aghdam, R.S., Tadyon, M.S., Zade Bagheri, M.},
  title = {Evaluation of competitiveness of different bean cultivars and pigweed as affected by nitrogen},
  journal = {Journal of Plant Ecophysiology},
  year = {2014},
  volume = {5},
  number = {15},
  pages = {49-62},
  doi = {}
}