Nwe Nwe Soe and  Lwin Thuzar Shwe and  Kay Thi Lwin,  Study on Extraction of Lanthanum Oxide from Monazite Concentrate.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2008, vol. 22(10). 238 - 241
    [viewed 08 May 2024]. Available from: https://publications.waset.org/pdf/3050.