WASET
    R. Guliyev,  Decreasing Environmental Pollution in Superphosphate Production Using Apatite and Phosphorite Mixture .   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2017, vol. 129(9). 875 - 880
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10008088.