Hossein Mohammadzadeh and  Mojtaba Heydarizad,  The Study of Stable Isotopes (18O, 2H & 13C) in Kardeh River and Dam Reservoir, North-Eastern Iran.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2017, vol. 129(9). 417 - 421
    [viewed 22 November 2019]. Available from: https://publications.waset.org/pdf/10008004.