W. Mughees and  M. Al-Ahmad and  M. Naeem,  Minimizing Fresh and Wastewater Using Water Pinch Technique in Petrochemical Industries.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 84(12). 917 - 923
    [viewed 27 October 2021]. Available from: https://publications.waset.org/pdf/9996876.