F. Boustani,  Sustainable Water Utilization in Arid Region of Iran by Qanats.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2008, vol. 19(7). 152 - 155
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/13037.