WASET
    A. H. M. Faisal Anwar,  Effect of Greywater Irrigation on Air-Water Interfacial area in Porous Medium.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2012, vol. 61(1). 53 - 57
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/2375.