WASET
    Ikbal Zammouri and  Béchir Ayeb,  Fractal Shapes Description with Parametric L-systems and Turtle Algebra.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2007, vol. 10(10). 472 - 477
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/15297.