Khosro Mohammadi and  Amir Ghalavand and  Majid Aghaalikhani,  Effect of Organic Matter and Biofertilizers on Chickpea Quality and Biological Nitrogen Fixation.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2010, vol. 44(8). 578 - 583
    [viewed 30 March 2020]. Available from: https://publications.waset.org/pdf/578.