WASET
    Piotr-Robert Lazik and  Harald Garrecht,  Wood Ashes from Electrostatic Filter as a Replacement for the Fly Ashes in Concrete.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2020, vol. 165(9). 292 - 295
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/10011431.