Rana Khalid Naeem and  Asif Mansoor,  Quantitative Estimation of Periodicities in Lyari River Flow Routing.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2008, vol. 13(1). 16 - 21
    [viewed 03 April 2020]. Available from: https://publications.waset.org/pdf/11003.