Olivier Mills and  Bernard McDonell and  Laura A. S. MacDonald,  An Online Space for Practitioners in the Water, Sanitation and Hygiene Sector.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2016, vol. 113(5). 564 - 567
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10004426.