WASET
    Negar Banan and  Mohd Talib Latif and  Liew Juneng,  An Assessment of Ozone Levels in Typical Urban Areas in the Malaysian Peninsular.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2013, vol. 74(2). 82 - 86
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/855.