WASET
    I. Benning,  Didactical and Semiotic Affordance of GeoGebra in a Productive Mathematical Discourse.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2023, vol. 195(3). 209 - 215
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10013032.