Ruedee Niyomrath,  Kaolin for Production of Souvenirs.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 73(1). 1 - 5
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/7746.