WASET
    C. Rattanakawin and  S. Vasailor,  Leaching of Flotation Concentrate of Oxide Copper Ore from Sepon Mine, Lao PDR.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2020, vol. 159(3). 86 - 90
    [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10011117.