Bahareh Khezri and  Richard D. Webster,  Chemical Analysis of PM2.5 during Dry Deforestation Season in Southeast Asia.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2012, vol. 64(4). 173 - 183
    [viewed 26 May 2022]. Available from: https://publications.waset.org/pdf/2721.