Mohammad Hadi Zohdi and  Mohamad Reza Dalvand and  Maryam Zohdi,  To Be Smooth of The Interest and Output of Accepted Companies Stock at Negotiable Paper Exchange of Tehran.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2011, vol. 53(5). 720 - 723
    [viewed 28 January 2020]. Available from: https://publications.waset.org/pdf/1113.