Joselito P. Duyanen and  Aries Milay,  Sediment Fixation of Arsenic in the Ash Lagoon of a Coal-Fired Power Plant, Philippines.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2008, vol. 20(8). 102 - 104
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9652.