Zunaira Asif and  Zhi Chen,  Optimization of Air Pollution Control Model for Mining.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2018, vol. 136(4). 411 - 417
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10008805.