WASET
    Sandya Mummullage and  Prasanna Egodawatta and  Ashantha Goonetilleke and  Godwin A. Ayoko,  Variability of Metal Composition and Concentrations  in Road Dust in the Urban Environment .   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 86(2). 100 - 105
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9997507.