@article{
  author = {Rabiee, Mohammad, Jilani, Mehrdad},
  title = {Effect of nitrogen fertilizer levels and row spacing on grain yield and morphological characteristics of rapeseed as 
second cropping after rice},
  journal = {Agroecology Journal},
  year = {2012},
  volume = {8},
  number = {3},
  pages = {22-33},
  doi = {}
}